Vulnerability Description
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. 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 2.22 and was fixed in 2.21.6, 2.20.15, and 2.19.21. The underlying issues contributing to this vulnerability were identified both internally and through the GitHub Security Bug Bounty program.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Github | Github | < 2.19.21 |
Related Weaknesses (CWE)
References
- https://enterprise.github.com/releases/2.19.21/notesRelease NotesVendor Advisory
- https://enterprise.github.com/releases/2.20.15/notesRelease NotesVendor Advisory
- https://enterprise.github.com/releases/2.21.6/notesRelease NotesVendor Advisory
- https://enterprise.github.com/releases/2.19.21/notesRelease NotesVendor Advisory
- https://enterprise.github.com/releases/2.20.15/notesRelease NotesVendor Advisory
- https://enterprise.github.com/releases/2.21.6/notesRelease NotesVendor Advisory
FAQ
What is CVE-2020-10518?
CVE-2020-10518 is a vulnerability with a CVSS score of 8.8 (HIGH). A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used...
How severe is CVE-2020-10518?
CVE-2020-10518 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-10518?
Check the references section above for vendor advisories and patch information. Affected products include: Github Github.