GMS-2023-6769: Denial of service when decrypting attack controlled input in github.com/dvsekhvalnov/jose2go

December 20, 2023

An attacker controlled input of a PBES2 encrypted JWE blob can have a very large p2c value that, when decrypted, produces a denial-of-service.

References

github.com/advisories/GHSA-mhpq-9638-x6pw
github.com/dvsekhvalnov/jose2go/commit/a4584e9dd7128608fedbc67892eba9697f0d5317
github.com/dvsekhvalnov/jose2go/issues/31
www.blackhat.com/us-23/briefings/schedule/

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