Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group
CVE-2021-22869

9.8CRITICAL

Key Information:

Vendor

Github

Vendor
CVE Published:
24 September 2021

What is CVE-2021-22869?

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.

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Affected Version(s)

GitHub Enterprise Server 3.0 < 3.0.16

GitHub Enterprise Server 3.1 < 3.1.8

References

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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