CVE-2024-9487

An Improper Verification of Cryptographic Signature vulnerability was identified in GitHub Enterprise Server that allowed SAML SSO authentication to be bypassed when the encrypted assertions feature was enabled

State
Published
Severity
9.5 Critical
Published
Oct 10, 2024
Updated
Oct 11, 2024
Reserved
Oct 3, 2024

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Description

An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed SAML SSO authentication to be bypassed resulting in unauthorized provisioning of users and access to the instance. Exploitation required the encrypted assertions feature to be enabled, and the attacker would require direct network access as well as a signed SAML response or metadata document. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.15 and was fixed in versions 3.11.16, 3.12.10, 3.13.5, and 3.14.2. This vulnerability was reported via the GitHub Bug Bounty program.

Scores

CVSSScoreVectorSource
4.09.5 CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/R:U/V:C/RE:M/U:RedGitHub_P

Weaknesses

  • CWE-347 Improper Verification of Cryptographic Signature

Affected Products

ProductVersions
Enterprise ServerGitHub
  • 3.11.0 through 3.11.15Affectedfrom 3.11.16Not affected
  • 3.12.0 through 3.12.9Affectedfrom 3.12.10Not affected
  • 3.13.0 through 3.13.4Affectedfrom 3.13.5Not affected
  • 3.14.0 through 3.14.1Affectedfrom 3.14.2Not affected

References

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