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| purl | pkg:deb/debian/libxstream-java@1.4.15-3%2Bdeb11u2 |
| Next non-vulnerable version | 1.4.20-1+deb12u1 |
| Latest non-vulnerable version | 1.4.20-1+deb12u1 |
| Risk | 4.0 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-fcg2-x3s5-wudk
Aliases: CVE-2024-47072 GHSA-hfq9-hggm-c56q |
XStream is vulnerable to a Denial of Service attack due to stack overflow from a manipulated binary input stream ### Impact The vulnerability may allow a remote attacker to terminate the application with a stack overflow error resulting in a denial of service only by manipulating the processed input stream when XStream is configured to use the BinaryStreamDriver. ### Patches XStream 1.4.21 detects the manipulation in the binary input stream causing the the stack overflow and raises an InputManipulationException instead. ### Workarounds The only solution is to catch the StackOverflowError in the client code calling XStream if XStream is configured to use the BinaryStreamDriver. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2024-47072](https://x-stream.github.io/CVE-2024-47072.html). ### Credits Alexis Challande of Trail Of Bits found and reported the issue to XStream and provided the required information to reproduce it. |
Affected by 0 other vulnerabilities. |
|
VCID-yb4j-92y9-nfb5
Aliases: CVE-2021-43859 GHSA-rmr5-cpv2-vgjf |
Denial of Service by injecting highly recursive collections or maps in XStream The vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-12bx-r37t-3ygm | Server-Side Request Forgery (SSRF) XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime to Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39150
GHSA-cxfm-5m4g-x7xp |
| VCID-2t1b-135u-euem | XStream can be used for Remote Code Execution ### Impact The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.14. ### Workarounds No user is affected, who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.13 or below who still want to use XStream default blacklist can use a workaround depending on their version in use. Users of XStream 1.4.13 can simply add two lines to XStream's setup code: ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class }); ``` Users of XStream 1.4.12 to 1.4.7 who want to use XStream with a black list will have to setup such a list from scratch and deny at least the following types: _javax.imageio.ImageIO$ContainsFilter_, _java.beans.EventHandler_, _java.lang.ProcessBuilder_, _java.lang.Void_ and _void_. ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class, java.beans.EventHandler.class, java.lang.ProcessBuilder.class, java.lang.Void.class, void.class }); ``` Users of XStream 1.4.6 or below can register an own converter to prevent the unmarshalling of the currently know critical types of the Java runtime. It is in fact an updated version of the workaround for CVE-2013-7285: ```Java xstream.registerConverter(new Converter() { public boolean canConvert(Class type) { return type != null && (type == java.beans.EventHandler.class || type == java.lang.ProcessBuilder.class || type == java.lang.Void.class || void.class || type.getName().equals("javax.imageio.ImageIO$ContainsFilter") || Proxy.isProxy(type)); } public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } }, XStream.PRIORITY_LOW); ``` ### Credits Chen L found and reported the issue to XStream and provided the required information to reproduce it. He was supported by Zhihong Tian and Hui Lu, both from Guangzhou University. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2020-26217](https://x-stream.github.io/CVE-2020-26217.html). ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2020-26217
GHSA-mw36-7c6c-q4q2 |
| VCID-6mz4-fu3s-vycx | XStream is vulnerable to an Arbitrary Code Execution attack ### Impact The vulnerability may allow a remote attacker to execute arbitrary code only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21350](https://x-stream.github.io/CVE-2021-21350.html). ### Credits The vulnerability was discovered and reported by threedr3am. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21350
GHSA-43gc-mjxg-gvrq |
| VCID-7ma6-2uv1-sbef | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39147
GHSA-h7v4-7xg3-hxcc |
| VCID-8gha-n6ke-nucu | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39148
GHSA-qrx8-8545-4wg2 |
| VCID-9442-1vwr-5fbt | XStream can cause Denial of Service via stack overflow ### Impact The vulnerability may allow a remote attacker to terminate the application with a stack overflow error resulting in a denial of service only by manipulating the processed input stream. ### Patches XStream 1.4.20 handles the stack overflow and raises an InputManipulationException instead. ### Workarounds The attack uses the hash code implementation for collections and maps to force recursive hash calculation causing a stack overflow. Following types of the Java runtime are affected: - java.util.HashMap - java.util.HashSet - java.util.Hashtable - java.util.LinkedHashMap - java.util.LinkedHashSet - Other third party collection implementations that use their element's hash code may also be affected A simple solution is to catch the StackOverflowError in the client code calling XStream. If your object graph does not use referenced elements at all, you may simply set the NO_REFERENCE mode: ```Java XStream xstream = new XStream(); xstream.setMode(XStream.NO_REFERENCES); ``` If your object graph contains neither a Hashtable, HashMap nor a HashSet (or one of the linked variants of it) then you can use the security framework to deny the usage of these types: ```Java XStream xstream = new XStream(); xstream.denyTypes(new Class[]{ java.util.HashMap.class, java.util.HashSet.class, java.util.Hashtable.class, java.util.LinkedHashMap.class, java.util.LinkedHashSet.class }); ``` Unfortunately these types are very common. If you only use HashMap or HashSet and your XML refers these only as default map or set, you may additionally change the default implementation of java.util.Map and java.util.Set at unmarshalling time:: ```Java xstream.addDefaultImplementation(java.util.TreeMap.class, java.util.Map.class); xstream.addDefaultImplementation(java.util.TreeSet.class, java.util.Set.class); ``` However, this implies that your application does not care about the implementation of the map and all elements are comparable. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2022-41966](https://x-stream.github.io/CVE-2022-41966.html). ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2022-41966
GHSA-j563-grx4-pjpv |
| VCID-c5tu-31kw-mfcf | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. if using the version out of the box with Java runtime to 8 or with JavaFX installed. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39153
GHSA-2q8x-2p7f-574v |
| VCID-dxpe-qmxq-ykax | Unrestricted Upload of File with Dangerous Type XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with a allow list limited to the minimal required types are not impacted. |
CVE-2021-39145
GHSA-8jrj-525p-826v |
| VCID-eeye-wfxf-x7cc | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with a allow list limited to the minimal required types are not impacted. |
CVE-2021-39146
GHSA-p8pq-r894-fm8f |
| VCID-f779-wcjk-kfc1 | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39154
GHSA-6w62-hx7r-mw68 |
| VCID-hsja-ryzy-7bbx | Server-Side Forgery Request can be activated unmarshalling with XStream ### Impact The vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.15. ### Workarounds The reported vulnerability does not exist running Java 15 or higher. No user is affected, who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still insist to use XStream default blacklist - despite that clear recommendation - can use a workaround depending on their version in use. Users of XStream 1.4.14 can simply add two lines to XStream's setup code: ```Java xstream.denyTypes(new String[]{ "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypesByRegExp(new String[]{ ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.14 to 1.4.13 can simply add three lines to XStream's setup code: ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter", "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class }); xstream.denyTypesByRegExp(new String[]{ ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.12 to 1.4.7 who want to use XStream with a black list will have to setup such a list from scratch and deny at least the following types: _javax.imageio.ImageIO$ContainsFilter_, _java.beans.EventHandler_, _java.lang.ProcessBuilder_, _jdk.nashorn.internal.objects.NativeString.class_, _java.lang.Void_ and _void_ and deny several types by name pattern. ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter", "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class, "jdk.nashorn.internal.objects.NativeString", java.beans.EventHandler.class, java.lang.ProcessBuilder.class, java.lang.Void.class, void.class }); xstream.denyTypesByRegExp(new String[]{ ".*\\$LazyIterator", "javax\\.crypto\\..*", ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.6 or below can register an own converter to prevent the unmarshalling of the currently know critical types of the Java runtime. It is in fact an updated version of the workaround for CVE-2013-7285: ```Java xstream.registerConverter(new Converter() { public boolean canConvert(Class type) { return type != null && (type == java.beans.EventHandler.class || type == java.lang.ProcessBuilder.class || type.getName().equals("javax.imageio.ImageIO$ContainsFilter") || type.getName().equals("jdk.nashorn.internal.objects.NativeString") || type == java.lang.Void.class || void.class || Proxy.isProxy(type)) || type.getName().startsWith("javax.crypto.") || type.getName().endsWith("$LazyIterator") || type.getName().endsWith(".ReadAllStream$FileStream")); } public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } }, XStream.PRIORITY_LOW); ``` ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2020-26258
GHSA-4cch-wxpw-8p28 |
| VCID-na6t-mkxt-3qbw | XStream is vulnerable to a Remote Command Execution attack XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with a allow list limited to the minimal required types are not impacted. |
CVE-2021-39144
GHSA-j9h8-phrw-h4fh |
| VCID-npjx-vkrd-9bae | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39141
GHSA-g5w6-mrj7-75h2 |
| VCID-nrf7-heu6-vfdc | XStream is vulnerable to an Arbitrary Code Execution attack ### Impact The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21344](https://x-stream.github.io/CVE-2021-21344.html). ### Credits 钟潦贵 (Liaogui Zhong) found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21344
GHSA-59jw-jqf4-3wq3 |
| VCID-qh44-75jb-wbhf | XStream is vulnerable to a Remote Command Execution attack ### Impact The vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21345](https://x-stream.github.io/CVE-2021-21345.html). ### Credits 钟潦贵 (Liaogui Zhong) found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21345
GHSA-hwpc-8xqv-jvj4 |
| VCID-qvbb-jhkk-2udw | XStream is vulnerable to a Remote Command Execution attack ### Impact The vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.17. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-29505](https://x-stream.github.io/CVE-2021-29505.html). ### Credits V3geB1rd, white hat hacker from Tencent Security Response Center found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Email us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-29505
GHSA-7chv-rrw6-w6fc |
| VCID-qwp5-wae9-cffb | XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos) ### Impact The vulnerability may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21348](https://x-stream.github.io/CVE-2021-21348.html). ### Credits The vulnerability was discovered and reported by threedr3am. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21348
GHSA-56p8-3fh9-4cvq |
| VCID-re5g-6kjz-q7e8 | XStream is vulnerable to an Arbitrary Code Execution attack ### Impact The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21351](https://x-stream.github.io/CVE-2021-21351.html). ### Credits wh1t3p1g G5-RD6@IIE found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21351
GHSA-hrcp-8f3q-4w2c |
| VCID-rfc1-r1gr-wffp | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39151
GHSA-hph2-m3g5-xxv4 |
| VCID-sqb5-brnu-vfbk | XStream is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling as long as the executing process has sufficient rights ### Impact The processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in the deletion of a file on the local host. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21343](https://x-stream.github.io/CVE-2021-21343.html). ### Credits 钟潦贵 (Liaogui Zhong) found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21343
GHSA-74cv-f58x-f9wf |
| VCID-u5yy-xx6z-dfh6 | A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host ### Impact The vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21349](https://x-stream.github.io/CVE-2021-21349.html). ### Credits The vulnerability was discovered and reported by threedr3am. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21349
GHSA-f6hm-88x3-mfjv |
| VCID-v7za-zjfx-mqek | Server-Side Request Forgery (SSRF) XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39152
GHSA-xw4p-crpj-vjx2 |
| VCID-vn1d-9uf5-gbce | XStream vulnerable to an Arbitrary File Deletion on the local host when unmarshalling ### Impact The vulnerability may allow a remote attacker to delete arbitrary know files on the host as log as the executing process has sufficient rights only by manipulating the processed input stream. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.15. ### Workarounds The reported vulnerability does only exist with a JAX-WS runtime on the classpath. No user is affected, who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still insist to use XStream default blacklist - despite that clear recommendation - can use a workaround depending on their version in use. Users of XStream 1.4.14 can simply add two lines to XStream's setup code: ```Java xstream.denyTypes(new String[]{ "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypesByRegExp(new String[]{ ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.14 to 1.4.13 can simply add three lines to XStream's setup code: ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter", "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class }); xstream.denyTypesByRegExp(new String[]{ ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.12 to 1.4.7 who want to use XStream with a black list will have to setup such a list from scratch and deny at least the following types: _javax.imageio.ImageIO$ContainsFilter_, _java.beans.EventHandler_, _java.lang.ProcessBuilder_, _jdk.nashorn.internal.objects.NativeString.class_, _java.lang.Void_ and _void_ and deny several types by name pattern. ```Java xstream.denyTypes(new String[]{ "javax.imageio.ImageIO$ContainsFilter", "jdk.nashorn.internal.objects.NativeString" }); xstream.denyTypes(new Class[]{ java.lang.ProcessBuilder.class, "jdk.nashorn.internal.objects.NativeString", java.beans.EventHandler.class, java.lang.ProcessBuilder.class, java.lang.Void.class, void.class }); xstream.denyTypesByRegExp(new String[]{ ".*\\$LazyIterator", "javax\\.crypto\\..*", ".*\\.ReadAllStream\\$FileStream" }); ``` Users of XStream 1.4.6 or below can register an own converter to prevent the unmarshalling of the currently know critical types of the Java runtime. It is in fact an updated version of the workaround for CVE-2013-7285: ```Java xstream.registerConverter(new Converter() { public boolean canConvert(Class type) { return type != null && (type == java.beans.EventHandler.class || type == java.lang.ProcessBuilder.class || type.getName().equals("javax.imageio.ImageIO$ContainsFilter") || type.getName().equals("jdk.nashorn.internal.objects.NativeString") || type == java.lang.Void.class || void.class || Proxy.isProxy(type)) || type.getName().startsWith("javax.crypto.") || type.getName().endsWith("$LazyIterator") || type.getName().endsWith(".ReadAllStream$FileStream")); } public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) { throw new ConversionException("Unsupported type due to security reasons."); } }, XStream.PRIORITY_LOW); ``` ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2020-26259
GHSA-jfvx-7wrx-43fh |
| VCID-vpxs-6wcf-ckh9 | XStream is vulnerable to an Arbitrary Code Execution attack ### Impact The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21346](https://x-stream.github.io/CVE-2021-21346.html). ### Credits wh1t3p1g G5-RD6@IIE found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21346
GHSA-4hrm-m67v-5cxr |
| VCID-wehr-d623-akaj | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to allocate % CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39140
GHSA-6wf9-jmg9-vxcc |
| VCID-xdpy-sx55-b3ac | XStream is vulnerable to an Arbitrary Code Execution attack ### Impact The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21347](https://x-stream.github.io/CVE-2021-21347.html). ### Credits The vulnerability was discovered and reported by threedr3am. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21347
GHSA-qpfq-ph7r-qv6f |
| VCID-xsr8-3cke-33ck | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39149
GHSA-3ccq-5vw3-2p6x |
| VCID-yuwe-6pp1-bke2 | Deserialization of Untrusted Data XStream is a simple library to serialize objects to XML and back again.However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. Users who followed the recommendation to setup XStream's security framework with an allow list limited to the minimal required types are not impacted. |
CVE-2021-39139
GHSA-64xx-cq4q-mf44 |
| VCID-zm9c-xw64-5qcc | XStream can cause a Denial of Service. ### Impact The vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16. ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21341](https://x-stream.github.io/CVE-2021-21341.html). ### Credits The vulnerability was discovered and reported by threedr3am. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21341
GHSA-2p3x-qw9c-25hh |
| VCID-zmh2-t17w-wue1 | A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host ### Impact The processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. ### Patches If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.16 ### Workarounds See [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-21342](https://x-stream.github.io/CVE-2021-21342.html). ### Credits 钟潦贵 (Liaogui Zhong) found and reported the issue to XStream and provided the required information to reproduce it. ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user) |
CVE-2021-21342
GHSA-hvv8-336g-rx3m |