CVE-2021-22869

Critical

Description

An improper access control vulnerability in GitHub Enterprise Server allowed a workflow job to execute in a self-hosted runner group it should not have had access to. This affects customers using self-hosted runner groups for access control. A repository with access to one enterprise runner group could access all of the enterprise runner groups within the organization because of improper authentication checks during the request. This could cause code to be run unintentionally by the incorrect runner group. This vulnerability affected GitHub Enterprise Server versions from 3.0.0 to 3.0.15 and 3.1.0 to 3.1.7 and was fixed in 3.0.16 and 3.1.8 releases.

SeverityCritical
CVSS9.8
Exploit probability—
ProductGithub Enterprise Server
PublishedSep 24, 2021
First seenSep 24, 2021
Weakness typeCWE-668CWE-668

How to fix

Update
  • github enterprise_server3.0.16, 3.1.8 or later

Affected products

ProductAffected versionsFixed in
github enterprise_server3.0.0 ≤ v < 3.0.16, 3.1.0 ≤ v < 3.1.83.0.16, 3.1.8

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