Vulnerability · Published Oct 10, 2024 · Assigned by GitHub_P
CVE-2024-9487An 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
Critical 9.5
In plain English
A critical-severity security flaw in Enterprise Server from GitHub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 25.6% (higher than 98% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| GitHub | Enterprise Server | 3.11.0 – through 3.11.153.12.0 – through 3.12.93.13.0 – through 3.13.43.14.0 – through 3.14.1 |
Weakness: CWE-347 · Vector: CVSS: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:Red
References
- https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.16 release-notes
- https://docs.github.com/en/enterprise-server@3.12/admin/release-notes#3.12.10 release-notes
- https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.5 release-notes
- https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.2 release-notes