Path traversal in GitHub Enterprise Server hosted Pages leads to unauthorized file read access
CVE-2021-22870

6.5MEDIUM

Key Information:

Vendor

Github
Status
Github Enterprise Server
Vendor
CVE Published:
10 November 2021

What is CVE-2021-22870?

A path traversal vulnerability was identified in GitHub Pages builds on GitHub Enterprise Server that could allow an attacker to read system files. 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 3.0.19, 3.1.11, and 3.2.3. This vulnerability was reported via the GitHub Bug Bounty program.

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Deploy the Patch

Affected Version(s)

GitHub Enterprise Server 3.0 < 3.0.19

GitHub Enterprise Server 3.1 < 3.1.11

GitHub Enterprise Server 3.2 < 3.2.3

References

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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https://docs.github.com/en/enterprise-server%403.2/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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