CVE-2022-34668

NVFLARE, versions prior to 2.1.4, contains a vulnerability that deserialization of Untrusted Data due to Pickle usage may allow an unprivileged network attacker to cause Remote Code Execution, Denial Of Service, and Impact to both Confidentiality and Integrity.

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://packetstormsecurity.com/files/171483/NVFLARE-Unsafe-Deserialization.html
• https://github.com/NVIDIA/NVFlare/security/advisories/GHSA-6qv6-q77g-7qm6
• http://packetstormsecurity.com/files/171483/NVFLARE-Unsafe-Deserialization.html
• https://github.com/NVIDIA/NVFlare/security/advisories/GHSA-6qv6-q77g-7qm6