CVE-2023-22381

low-risk
Published 2023-03-02

A code injection vulnerability was identified in GitHub Enterprise Server that allowed setting arbitrary environment variables from a single environment variable value in GitHub Actions when using a Windows based runner. To exploit this vulnerability, an attacker would need existing permission to control the value of environment variables for use with GitHub Actions. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.8.0 and was fixed in versions 3.4.15, 3.5.12, 3.6.8, 3.7.5. This vulnerability was reported via the GitHub Bug Bounty program.

Do I need to act?

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0.53% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.1/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Github

References (10)

Release Notes https://docs.github.com/en/enterprise-server@3.4/admin/release-notes#3.4.15
Release Notes https://docs.github.com/en/enterprise-server@3.5/admin/release-notes#3.5.12
Release Notes https://docs.github.com/en/enterprise-server@3.6/admin/release-notes#3.6.8
Release Notes https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.5
Release Notes https://docs.github.com/en/enterprise-server@3.8/admin/release-notes
Release Notes https://docs.github.com/en/enterprise-server@3.4/admin/release-notes#3.4.15
Release Notes https://docs.github.com/en/enterprise-server@3.5/admin/release-notes#3.5.12
Release Notes https://docs.github.com/en/enterprise-server@3.6/admin/release-notes#3.6.8
Release Notes https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.5
Release Notes https://docs.github.com/en/enterprise-server@3.8/admin/release-notes
21
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal