Administrator access via forged SAML responses
Published Jan 21, 2025 · Updated Feb 12, 2025
SAML signature verification in GitHub Enterprise Server before 3.16.0 allows remote authenticated users to gain administrator access. The SAML SSO response verifier improperly validates cryptographic signatures, accepting a forged assertion that provisions or accesses an administrator account. Exploitation requires an existing internal user and an instance configured for SAML SSO; non-SAML instances and outsiders without accounts are unaffected.
Summary
What happened
SAML signature verification in GitHub Enterprise Server before 3.16.0 allows remote authenticated users to gain administrator access. The SAML SSO response verifier improperly validates cryptographic signatures, accepting a forged assertion that provisions or accesses an administrator account. Exploitation requires an existing internal user and an instance configured for SAML SSO; non-SAML instances and outsiders without accounts are unaffected.
The record
- CVE
- CVE-2025-23369
- Published
- Jan 21, 2025
- Updated
- Feb 12, 2025
- Vendor
- Product
- GitHub Enterprise Server
- Classifications
- CWE-347, T1606.002
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 21, 2025CVE publishedPublication date reported by the CVE source.
- Feb 12, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.12.0 <=3.12.13 changes=[{"at":"3.12.14","status":"unaffected"}]
- Affected versionversion=3.13.0 <=3.13.9 changes=[{"at":"3.13.10","status":"unaffected"}]
- Affected versionversion=3.14.0 <=3.14.6 changes=[{"at":"3.14.7","status":"unaffected"}]
- Affected versionversion=3.15.0 <=3.15.1 changes=[{"at":"3.15.2","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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