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CVE

CVE-2023-23763

An authorization/sensitive information disclosure vulnerability was identified in GitHub Enterprise Server that allowed

An authorization/sensitive information disclosure vulnerability was identified in GitHub Enterprise Server that allowed a fork to retain read access to an upstream repository after its visibility was changed to private. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.10.0 and was fixed in versions 3.9.4, 3.8.9, 3.7.16 and 3.6.18. This vulnerability was reported via the GitHub Bug Bounty program.

MEDIUM · CVSS 5.3 EPSS 0.00139
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-862Missing Authorization
▤

Affected Products & Versions

4
github enterprise server>= 3.6.0 and < 3.6.18
github enterprise server>= 3.7.0 and < 3.7.16
github enterprise server>= 3.8.0 and < 3.8.9
github enterprise server>= 3.9.0 and < 3.9.4
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · product-cna@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Sep 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.github.com/en/enterprise-server@3.6/admin/release-notes#3.6.18-security-fixesRelease Notes
https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.16-security-fixesRelease Notes
https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.9-security-fixesRelease Notes
https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.4-security-fixesRelease Notes
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