CVE-2020-10518
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.70% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Affected
- github/github
- Source
- product-cna@github.com
References
- https://enterprise.github.com/releases/2.19.21/notesRelease Notes, Vendor Advisory
- https://enterprise.github.com/releases/2.20.15/notesRelease Notes, Vendor Advisory
- https://enterprise.github.com/releases/2.21.6/notesRelease Notes, Vendor Advisory
- https://enterprise.github.com/releases/2.19.21/notesRelease Notes, Vendor Advisory
- https://enterprise.github.com/releases/2.20.15/notesRelease Notes, Vendor Advisory
- https://enterprise.github.com/releases/2.21.6/notesRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.