GitHub has released fixes to address a set of three security flaws impacting its Enterprise Server product, including one critical bug that could be abused to gain site administrator privileges.
The most severe of the shortcomings has been assigned the CVE identifier CVE-2024-6800, and carries a CVSS score of 9.5.
“On GitHub Enterprise Server instances that use SAML single sign-on (SSO) authentication with specific IdPs utilizing publicly exposed signed federation metadata XML, an attacker could forge a SAML response to provision and/or gain access to a user account with site administrator privileges,” GitHub said in an advisory.
The Microsoft-owned subsidiary has also addressed a pair of medium-severity flaws –
- CVE-2024-7711 (CVSS score: 5.3) – An incorrect authorization vulnerability that could allow an attacker to update the title, assignees, and labels of any issue inside a public repository.
- CVE-2024-6337 (CVSS score: 5.9) – An incorrect authorization vulnerability that could allow an attacker to access issue contents from a private repository using a GitHub App with only contents: read and pull requests: write permissions.
All three security vulnerabilities have been addressed in GHES versions 3.13.3, 3.12.8, 3.11.14, and 3.10.16.
Back in May, GitHub also patched a critical security vulnerability (CVE-2024-4985, CVSS score: 10.0) that could permit unauthorized access to an instance without requiring prior authentication.
Organizations that are running a vulnerable self-hosted version of GHES are highly advised to update to the latest version to safeguard against potential security threats.