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Critical severity · published Sep 24, 2021
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
9.8
CVSS
1.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ES
Enterprise Server · Github
3.0.0 before 3.0.16; 3.1.0 before 3.1.8 · source: NVD
Affected product
ES
Enterprise Server
Github
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22869
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22869
docs.github.com
https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.16
docs.github.com
https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.8
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