High severity · published Mar 3, 2021
CVE-2020-10519
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site
8.8
CVSS
3.1%
EPSS
No
On KEV
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 2.22.7 and was fixed in 2.22.7, 2.21.15, and 2.20.24. The underlying issues contributing to this vulnerability were identified through the GitHub Security Bug Bounty program.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
Github · Github
before 2.20.24; 2.21.0 before 2.21.15; 2.22.0 before 2.22.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-10519
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-10519
docs.github.com
https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24
docs.github.com
https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15
docs.github.com
https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7
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