GitHub Patches Critical Flaw in Enterprise Server Allowing Unauthorized Instance Access
Oct 16, 2024
Enterprise Security / Vulnerability
GitHub has released security updates for Enterprise Server (GHES) to address multiple issues, including a critical bug that could allow unauthorized access to an instance. The vulnerability, tracked as CVE-2024-9487, carries a CVS score of 9.5 out of a maximum of 10.0 "An attacker could bypass SAML single sign-on (SSO) authentication with the optional encrypted assertions feature, allowing unauthorized provisioning of users and access to the instance, by exploiting an improper verification of cryptographic signatures vulnerability in GitHub Enterprise Server," GitHub said in an alert. The Microsoft-owned company characterized the flaw as a regression that was introduced as part of follow-up remediation from CVE-2024-4985 (CVSS score: 10.0), a maximum severity vulnerability that was patched back in May 2024. Also fixed by GitHub are two other shortcomings - CVE-2024-9539 (CVSS score: 5.7) - An information disclosure vulnerability that could enable an attacker to ret...