Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed rendering of malicious HTML
Vulnerability Description
An Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed attacker controlled HTML to be rendered by the Filter component (search) across GitHub that could be used to exfiltrate sensitive information. An attacker would require permissions to create or modify the names of milestones, issues, pull requests, or similar entities that are rendered in the vulnerable filter/search components. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.1, and 3.18.2, 3.17.8, 3.16.11, 3.15.15, and 3.14.20. This vulnerability was reported via the GitHub Bug Bounty program.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Roshan Kudave
- Johan Carlsson
References
- https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.20
- https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.15
- https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.11
- https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.8
- https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.2
- https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.1
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