Essential Auth Bypass Vulnerability Affected GitHub Enterprise Server

Enterprise customers have to replace their methods with the newest GitHub Enterprise Server launch, because the service patched a critical auth bypass vulnerability and addressed another safety flaws.

A GitHub Enterprise Server Vulnerability Might Permit Admin Privileges To An Attacker

In response to the current updates to the GitHub launch notes, the service addressed a essential vulnerability within the GitHub Enterprise Server.

GitHub Enterprise Server (GHES) is a self-hosted model of GitHub geared toward facilitating enterprise customers. Organizations might go for Enterprise Server deployments for streamlined functioning, satisfactory regulatory compliance, and extra management over entry and security measures.

GitHub described the essential vulnerability as an authentication bypass situation. Recognized as CVE-2024-6800, this vulnerability obtained a CVSS rating of 9.5. It existed on account of an XML signature wrapping situation with GHES situations utilizing SAML single sign-on (SSO) authentication with particular id suppliers (IdPs) utilizing publicly uncovered signed federation metadata XML.

Exploiting the flaw might enable an unauthorized attacker with direct community entry to GHES to forge a SAML response. This, in flip, would let the adversary achieve elevated privileges, equivalent to website administrator, with out authentication.

This vulnerability caught GitHub’s consideration following a bug report submitted by way of its Bug Bounty Program. It affected all GHES variations earlier than the Launch candidate (RC) construct 3.14.

Following the report, the service patched the vulnerability with GHES secure variations 3.13.3, 3.12.8, 3.11.14, and three.10.16.

Apart from this essential vulnerability, GitHub additionally fastened two medium-severity safety flaws (described under). These vulnerabilities additionally caught GitHub’s consideration by bug studies submitted to its bug bounty program.

• CVE-2024-7711 (CVSS 5.3): An incorrect authorization flaw permitting an adversary to replace the title, assignee, and labels of any situation in public repositories.
• CVE-2024-6337 (CVSS 5.9): One other incorrect authorization vulnerability that uncovered situation content material from non-public repositories utilizing a GitHub App with solely contents: learn and pull requests: write permissions. An attacker might use the entry token to take advantage of the flaw and browse the difficulty contents.

For the reason that patches have been launched for a number of GHES variations, customers should replace their methods accordingly to obtain the fixes.

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