High severity · published Feb 17, 2022
CVE-2021-41599
Improper control flow in GitHub Enterprise Server hosted Pages leads to remote code execution
8.8
CVSS
2.2%
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. 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.
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)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GE
GitHub Enterprise Server · GitHub
3.0 before 3.0.21; 3.1 before 3.1.13; 3.2 before 3.2.5 · source: vendor
ES
Enterprise Server · Github
3.0.0 before 3.0.21; 3.1.0 before 3.1.13; 3.2.0 before 3.2.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41599
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41599
docs.github.com
https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21
docs.github.com
https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13
docs.github.com
https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5
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