CVE-2024-21664: NULL Pointer Dereference

January 9, 2024 (updated January 23, 2024)

jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. Calling jws.Parse with a JSON serialized payload where the signature field is present while protected is absent can lead to a nil pointer dereference. The vulnerability can be used to crash/DOS a system doing JWS verification. This vulnerability has been patched in version 2.0.19.

References

github.com/advisories/GHSA-pvcr-v8j8-j5q3
github.com/lestrrat-go/jwx/commit/0e8802ce6842625845d651456493e7c87625601f
github.com/lestrrat-go/jwx/commit/d69a721931a5c48b9850a42404f18e143704adcd
github.com/lestrrat-go/jwx/security/advisories/GHSA-pvcr-v8j8-j5q3
nvd.nist.gov/vuln/detail/CVE-2024-21664

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