Package Instance

Square OkHttp can accept the wrong certificate
In verifyHostName of OkHostnameVerifier.java, there is a possible way to accept a certificate for the wrong domain due to improperly used crypto. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11 Android ID: A-171980069

Apache James MIME4J vulnerable to information disclosure to local users
Unproper laxist permissions on the temporary files used by MIME4J TempFileStorageProvider may lead to information disclosure to other local users. This issue affects Apache James MIME4J version 0.8.8 and prior versions. We recommend users to upgrade to MIME4j version 0.8.9 or later.

Insecure Temporary File in RESTEasy
In RESTEasy the insecure File.createTempFile() is used in the DataSourceProvider, FileProvider and Mime4JWorkaround classes which creates temp files with insecure permissions that could be read by a local user.

snakeYAML before 1.32 vulnerable to Denial of Service due to Out-of-bounds Write
Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DoS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stack-overflow.

Undertow client not checking server identity presented by server certificate in https connections
The undertow client is not checking the server identity presented by the server certificate in https connections. This should be performed by default in https and in http/2.

HAProxyMessageDecoder Stack Exhaustion DoS
### Impact
A StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion.

### Patches
Users should upgrade to 4.1.86.Final.

### Workarounds
There is no workaround, except using a custom HaProxyMessageDecoder.

### References
When parsing a TLV with type = PP2_TYPE_SSL, the value can be again a TLV with type = PP2_TYPE_SSL and so on.
The only limitation of the recursion is that the TLV length cannot be bigger than 0xffff because it is encoded in an unsigned short type.
Providing a TLV with a nesting level that is large enough will lead to raising of a StackOverflowError.
The StackOverflowError will be caught if HAProxyMessageDecoder is used as part of Netty’s ChannelPipeline, but using it directly without the ChannelPipeline will lead to a thrown exception / crash.


### For more information
If you have any questions or comments about this advisory:
* Open an issue in [netty](https://github.com/netty/netty)

Snakeyaml vulnerable to Stack overflow leading to denial of service
Those using Snakeyaml to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stack overflow. This effect may support a denial of service attack.