Vulnerability Details : CVE-2020-10518
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.
Vulnerability category: Execute code
Products affected by CVE-2020-10518
- cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-10518
0.29%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-10518
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-10518
-
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.Assigned by: product-cna@github.com (Secondary)
References for CVE-2020-10518
-
https://enterprise.github.com/releases/2.19.21/notes
GitHub Enterprise - The best way to build and ship softwareRelease Notes;Vendor Advisory
-
https://enterprise.github.com/releases/2.20.15/notes
GitHub Enterprise - The best way to build and ship softwareRelease Notes;Vendor Advisory
-
https://enterprise.github.com/releases/2.21.6/notes
GitHub Enterprise - The best way to build and ship softwareRelease Notes;Vendor Advisory
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