CVE-2022-0538

Jenkins 2.333 and earlier, LTS 2.319.2 and earlier defines custom XStream converters that have not been updated to apply the protections for the vulnerability CVE-2021-43859 and allow unconstrained resource usage.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://www.openwall.com/lists/oss-security/2022/02/09/1
• https://www.jenkins.io/security/advisory/2022-02-09/#SECURITY-2602
• http://www.openwall.com/lists/oss-security/2022/02/09/1
• https://www.jenkins.io/security/advisory/2022-02-09/#SECURITY-2602