python-jose through 3.5.0 Algorithm Confusion via DER-encoded Public Key as HMAC Secret
28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.3epss 0.2%
probabilidade de exploração
0.2%top 87% das CVEs
exploração observada
nãonenhuma fonte reporta
python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Produtos afetados
mpdavis · python-joseReferências
https://github.com/advisories/GHSA-6c5p-j8vq-pqhjhttps://github.com/mpdavis/python-josehttps://github.com/mpdavis/python-jose/blob/018b310ddb8b50dcfd09a0c152117835a21dd656/jose/backends/native.pyhttps://github.com/mpdavis/python-jose/blob/018b310ddb8b50dcfd09a0c152117835a21dd656/jose/utils.pyhttps://github.com/mpdavis/python-jose/issues/414https://www.vulncheck.com/advisories/python-jose-through-3.5.0-algorithm-confusion-via-der-encoded-public-key-as-hmac-secret