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GHSA-4hvc-qwr2-f8rv: Redisson vulnerable to Deserialization of Untrusted Data

Redisson is a Java Redis client that uses the Netty framework. Prior to version 3.22.0, some of the messages received from the Redis server contain Java objects that the client deserializes without further validation. Attackers that manage to trick clients into communicating with a malicious server can include especially crafted objects in its responses that, once deserialized by the client, force it to execute arbitrary code. This can be abused to take control of the machine the client is running in. Version 3.22.0 contains a patch for this issue.

Some post-fix advice is available. Do NOT use Kryo5Codec as deserialization codec, as it is still vulnerable to arbitrary object deserialization due to the setRegistrationRequired(false) call. On the contrary, KryoCodec is safe to use. The fix applied to SerializationCodec only consists of adding an optional allowlist of class names, even though making this behavior the default is recommended. When instantiating SerializationCodec please use the SerializationCodec(ClassLoader classLoader, Set<String> allowedClasses) constructor to restrict the allowed classes for deserialization.

ghsa
#mac#redis#git#java#maven#ssl
  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2023-42809

Redisson vulnerable to Deserialization of Untrusted Data

Critical severity GitHub Reviewed Published Aug 5, 2024 to the GitHub Advisory Database • Updated Aug 5, 2024

Package

maven org.redisson:redisson (Maven)

Affected versions

< 3.22.0

Redisson is a Java Redis client that uses the Netty framework. Prior to version 3.22.0, some of the messages received from the Redis server contain Java objects that the client deserializes without further validation. Attackers that manage to trick clients into communicating with a malicious server can include especially crafted objects in its responses that, once deserialized by the client, force it to execute arbitrary code. This can be abused to take control of the machine the client is running in. Version 3.22.0 contains a patch for this issue.

Some post-fix advice is available. Do NOT use Kryo5Codec as deserialization codec, as it is still vulnerable to arbitrary object deserialization due to the setRegistrationRequired(false) call. On the contrary, KryoCodec is safe to use. The fix applied to SerializationCodec only consists of adding an optional allowlist of class names, even though making this behavior the default is recommended. When instantiating SerializationCodec please use the SerializationCodec(ClassLoader classLoader, Set<String> allowedClasses) constructor to restrict the allowed classes for deserialization.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2023-42809
  • redisson/redisson@fe6a257
  • https://securitylab.github.com/advisories/GHSL-2023-053_Redisson

Published to the GitHub Advisory Database

Aug 5, 2024

Related news

CVE-2023-42809: Feature - allowedClasses setting added to SerializationCodec https://… · redisson/redisson@fe6a257

Redisson is a Java Redis client that uses the Netty framework. Prior to version 3.22.0, some of the messages received from the Redis server contain Java objects that the client deserializes without further validation. Attackers that manage to trick clients into communicating with a malicious server can include especially crafted objects in its responses that, once deserialized by the client, force it to execute arbitrary code. This can be abused to take control of the machine the client is running in. Version 3.22.0 contains a patch for this issue. Some post-fix advice is available. Do NOT use `Kryo5Codec` as deserialization codec, as it is still vulnerable to arbitrary object deserialization due to the `setRegistrationRequired(false)` call. On the contrary, `KryoCodec` is safe to use. The fix applied to `SerializationCodec` only consists of adding an optional allowlist of class names, even though making this behavior the default is recommended. When instantiating `SerializationCodec`...