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Package details: pkg:deb/ubuntu/thunderbird@1:78.8.1%2Bbuild1-0ubuntu0.18.04.1
purl pkg:deb/ubuntu/thunderbird@1:78.8.1%2Bbuild1-0ubuntu0.18.04.1
Next non-vulnerable version 1:78.14.0+build1-0ubuntu0.20.04.1
Latest non-vulnerable version 1:78.14.0+build1-0ubuntu0.20.04.1
Risk 4.5
Vulnerabilities affecting this package (36)
Vulnerability Summary Fixed by
VCID-19zf-ejew-aaaa
Aliases:
CVE-2021-23973
When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
1:78.8.1+build1-0ubuntu0.20.04.1
Affected by 31 other vulnerabilities.
VCID-1gkb-wc83-aaad
Aliases:
CVE-2021-30547
Out of bounds write in ANGLE in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-2d3s-yvhn-aaaj
Aliases:
CVE-2021-29945
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-4d5s-zzcw-aaaj
Aliases:
CVE-2021-29984
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-523z-uvp3-aaam
Aliases:
CVE-2021-23992
Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects Thunderbird < 78.9.1.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-547k-v6zd-aaag
Aliases:
CVE-2021-29949
When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-6gkn-bwdh-aaaj
Aliases:
CVE-2021-23978
Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
1:78.8.1+build1-0ubuntu0.20.04.1
Affected by 31 other vulnerabilities.
VCID-6h36-r9kp-aaah
Aliases:
CVE-2021-23993
An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-6rtk-4prh-aaag
Aliases:
CVE-2021-29948
Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-6sbr-5wh6-aaaj
Aliases:
CVE-2021-23995
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-7czg-22gd-aaak
Aliases:
CVE-2021-24002
When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-7k21-adjy-aaap
Aliases:
CVE-2021-29967
Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-7pxp-zs62-aaae
Aliases:
CVE-2021-29988
Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-831f-qtke-aaaa
Aliases:
CVE-2021-23999
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-9kp8-dukp-aaap
Aliases:
CVE-2021-23982
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-abqn-q22n-aaag
Aliases:
CVE-2021-23991
If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-ajhw-h67b-aaaq
Aliases:
CVE-2021-29946
Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-ax5f-3a8e-aaad
Aliases:
CVE-2021-23984
A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-d11z-q6pp-aaah
Aliases:
CVE-2021-29985
A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-dapf-1sew-aaaq
Aliases:
CVE-2021-29976
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-g433-dtws-aaaj
Aliases:
CVE-2021-29950
Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This vulnerability affects Thunderbird < 78.8.1.
1:78.8.1+build1-0ubuntu0.20.04.1
Affected by 31 other vulnerabilities.
VCID-g7bm-8d6t-aaae
Aliases:
CVE-2021-29956
OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored unencrypted on the user's local disk. The master password protection was inactive for those keys. Version 78.10.2 will restore the protection mechanism for newly imported keys, and will automatically protect keys that had been imported using affected Thunderbird versions. This vulnerability affects Thunderbird < 78.10.2.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-hc8x-cusp-aaam
Aliases:
CVE-2021-29989
Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-n35k-ra7d-aaas
Aliases:
CVE-2021-23994
A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-p935-2hns-aaah
Aliases:
CVE-2021-29970
A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-qjaf-segr-aaak
Aliases:
CVE-2021-23987
Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-spqx-m1br-aaaq
Aliases:
CVE-2021-29969
If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-sz3p-eqs5-aaab
Aliases:
CVE-2021-23968
If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
1:78.8.1+build1-0ubuntu0.20.04.1
Affected by 31 other vulnerabilities.
VCID-tyq3-9fh9-aaar
Aliases:
CVE-2021-23961
Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-uwbt-ejee-aaan
Aliases:
CVE-2021-29986
A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.* This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-vhe2-uxqw-aaas
Aliases:
CVE-2021-29980
Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
1:78.13.0+build1-0ubuntu0.20.04.2
Affected by 1 other vulnerability.
VCID-vhvv-xjnk-aaac
Aliases:
CVE-2021-23998
Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-w2jk-f4u6-aaaj
Aliases:
CVE-2021-29957
If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected. This vulnerability affects Thunderbird < 78.10.2.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-wv46-3gkh-aaam
Aliases:
CVE-2021-38493
Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.
1:78.14.0+build1-0ubuntu0.20.04.1
Affected by 0 other vulnerabilities.
VCID-wypr-856t-aaah
Aliases:
CVE-2021-23981
A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
1:78.11.0+build1-0ubuntu0.20.04.2
Affected by 11 other vulnerabilities.
VCID-xqa1-kztd-aaah
Aliases:
CVE-2021-23969
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
1:78.8.1+build1-0ubuntu0.20.04.1
Affected by 31 other vulnerabilities.
Vulnerabilities fixed by this package (51)
Vulnerability Summary Aliases
VCID-18tm-g12t-aaad Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. CVE-2020-15673
VCID-1ujj-evb7-aaas When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. CVE-2020-15654
VCID-2pvx-sqzv-aaaa In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26956
VCID-38x7-vzgt-aaab Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. CVE-2020-16042
VCID-4x9u-r2c9-aaap Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4. CVE-2020-15683
VCID-51y4-62zh-aaam Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-35113
VCID-589s-qqgp-aaar When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26961
VCID-5nsh-d5x7-aaac By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed in the download file dialog to show the original site (the one suffering from the open redirect) rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. CVE-2020-15677
VCID-5z6t-46r7-aaas When "%2F" was present in a manifest URL, Firefox's AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78. CVE-2020-12415
VCID-6vac-dc3e-aaas When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12. CVE-2020-15669
VCID-7cpy-v3jb-aaak During the plaintext phase of the STARTTLS connection setup, protocol commands could have been injected and evaluated within the encrypted session. This vulnerability affects Thunderbird < 78.7. CVE-2020-15685
VCID-7pvj-4ud9-aaaf If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26960
VCID-88cj-hqax-aaad Due to confusion processing a hyphen character in Date.parse(), a one-byte out of bounds read could have occurred, leading to potential information disclosure. This vulnerability affects Firefox < 78. CVE-2020-12425
VCID-91ed-mhev-aaaa Some websites have a feature "Show Password" where clicking a button will change a password field into a textbook field, revealing the typed password. If, when using a software keyboard that remembers user input, a user typed their password and used that feature, the type of the password field was changed, resulting in a keyboard layout change and the possibility for the software keyboard to remember the typed password. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26965
VCID-9a4a-hev9-aaah A VideoStreamEncoder may have been freed in a race condition with VideoBroadcaster::AddOrUpdateSink, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78. CVE-2020-12416
VCID-9e28-p8t5-aaak In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2. CVE-2020-26950
VCID-b39d-4f7j-aaaf A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26951
VCID-b8gg-bqs6-aaar Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. CVE-2021-23964
VCID-bzdy-ke8u-aaac Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1. CVE-2020-15659
VCID-c5g6-we4w-aaab A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. CVE-2020-15655
VCID-c83h-99tb-aaab When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. CVE-2020-15678
VCID-cpn7-emuh-aaae Inappropriate implementation in WebRTC in Google Chrome prior to 84.0.4147.89 allowed an attacker in a privileged network position to potentially exploit heap corruption via a crafted SCTP stream. CVE-2020-6514
VCID-e82t-cusu-aaab When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing. This vulnerability affects Firefox < 84. CVE-2020-26976
VCID-eyzj-zjqb-aaam It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26953
VCID-gcj9-dta3-aaah Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-26978
VCID-gs4m-md5m-aaan When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-26974
VCID-he22-dw9a-aaag When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-35111
VCID-hmeb-2gjt-aaag Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. CVE-2020-15969
VCID-hmyw-2x88-aaaj Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet. CVE-2020-16044
VCID-j1gt-ebpu-aaaa Mozilla developers and community members reported memory safety bugs present in Firefox 77. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 78. CVE-2020-12426
VCID-kb9w-bzwr-aaag If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. CVE-2021-23953
VCID-kcxt-88yq-aaad Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26958
VCID-kvrc-hr7g-aaam Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-26971
VCID-met3-dhk3-aaae Use after free in ANGLE in Google Chrome prior to 81.0.4044.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. CVE-2020-6463
VCID-mr21-vp39-aaae An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This could have led to security issues for websites relying on sandbox configurations that allowed popups and hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. CVE-2020-15653
VCID-mwmq-pzu3-aaas When constructing a permission prompt for WebRTC, a URI was supplied from the content process. This URI was untrusted, and could have been the URI of an origin that was previously granted permission; bypassing the prompt. This vulnerability affects Firefox < 78. CVE-2020-12424
VCID-pshr-5rcz-aaas Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26968
VCID-q22a-7dhv-aaar During browser shutdown, reference decrementing could have occured on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. CVE-2020-26959
VCID-q63r-6826-aaaj Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. CVE-2021-23960
VCID-r7du-vrqu-aaak Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. CVE-2021-23954
VCID-rj58-m29v-aaan Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. CVE-2020-26973
VCID-rwyv-m93a-aaak By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, Firefox ESR < 78.2, and Firefox for Android < 80. CVE-2020-15664
VCID-t8tw-9efw-aaar JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. CVE-2020-15656
VCID-tcc2-u44z-aaar Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. CVE-2020-15676
VCID-tmsb-49j8-aaaq By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1. CVE-2020-15652
VCID-twsd-eaj7-aaah The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. CVE-2020-15658
VCID-uzfw-svvm-aaaq In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78. CVE-2020-12422
VCID-vzcf-ep4j-aaar Using object or embed tags, it was possible to frame other websites, even if they disallowed framing using the X-Frame-Options header. This vulnerability affects Thunderbird < 78 and Firefox < 78.0.2. CVE-2020-15648
VCID-yd5d-jx5e-aaae Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page. CVE-2020-16012
VCID-ywv1-b6gf-aaac When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1. CVE-2020-26970
VCID-zjna-bbmv-aaas Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80. CVE-2020-15670

Date Actor Action Vulnerability Source VulnerableCode Version