Null pointer dereference

2024-01-0920:15:00

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null pointer dereference

go module

jwa/jwe/jwk/jws/jwt

json serialized payload

absent protected field

crash/dos

jws verification vulnerability

nvd

7.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

23.2%

JSON

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 versions 2.0.19 and 1.2.28.