CVE-2021-41599: Improper control flow in GitHub Enterprise Server hosted Pages leads to remote code execution
First published: Thu Feb 17 2022(Updated: )
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.3 and was fixed in versions 3.0.21, 3.1.13, 3.2.5. This vulnerability was reported via the GitHub Bug Bounty program.
Credit: product-cna@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GitHub Enterprise Server | >=3.0.0<3.0.21 | |
| GitHub Enterprise Server | >=3.1.0<3.1.13 | |
| GitHub Enterprise Server | >=3.2.0<3.2.5 |
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Reference Links
- https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.21
- https://docs.github.com/en/enterprise-server@3.1/admin/release-notes#3.1.13
- https://docs.github.com/en/enterprise-server@3.2/admin/release-notes#3.2.5
- https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21
- https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13
- https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5
Frequently Asked Questions
What is CVE-2021-41599?
CVE-2021-41599 is a remote code execution vulnerability identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site.
What is the severity of CVE-2021-41599?
CVE-2021-41599 has a severity rating of 8.8 (high).
How can CVE-2021-41599 be exploited?
To exploit CVE-2021-41599, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance.
Which versions of GitHub Enterprise Server are affected by CVE-2021-41599?
GitHub Enterprise Server versions 3.0.0 to 3.0.21, 3.1.0 to 3.1.13, and 3.2.0 to 3.2.5 are affected by CVE-2021-41599.
How can I fix CVE-2021-41599?
To fix CVE-2021-41599, users should update their GitHub Enterprise Server to a version beyond the affected range.
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