Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.6epss 1.6%
exploitation probability
1.6%top 27% of all CVEs
observed exploitation
nono source reports it
An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Affected products
GitHub · Enterprise ServerReferences
https://docs.github.com/en/enterprise-server@3.12/admin/release-notes#3.12.14https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.10https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.7https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.2