Unsafe configuration options in GitHub Pages leading to path traversal on GitHub Enterprise Server
CVE-2021-22867

6.5MEDIUM

Key Information:

Vendor

Github
Status
Github Enterprise Server
Vendor
CVE Published:
14 July 2021

What is CVE-2021-22867?

A path traversal vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration options used by GitHub Pages were not sufficiently restricted and made it possible to read files 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 3.1.3 and was fixed in 3.1.3, 3.0.11, and 2.22.17. This vulnerability was reported via the GitHub Bug Bounty program.

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Affected Version(s)

GitHub Enterprise Server 2.22 < 2.22.17

GitHub Enterprise Server 3.0 < 3.0.11

GitHub Enterprise Server 3.1 < 3.1.3

References

https://docs.github.com/en/enterprise-server%402.22/admin...
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https://docs.github.com/en/enterprise-server%403.0/admin/...
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https://docs.github.com/en/enterprise-server%403.1/admin/...
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CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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