CVE-2023-23763 : An authorization/sensitive information disclosure vulnerability was identified i

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.

Published 2023-09-01 15:15:08

Updated 2023-09-07 19:53:28

Source GitHub, Inc. (Products Only)

View at NVD, CVE.org

Vulnerability category: Information leak

Products affected by CVE-2023-23763

Github » Enterprise Server
Versions from including (>=) 3.7.0 and before (<) 3.7.16
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Matching versions
Github » Enterprise Server
Versions from including (>=) 3.8.0 and before (<) 3.8.9
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Matching versions
Github » Enterprise Server
Versions from including (>=) 3.9.0 and before (<) 3.9.4
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Matching versions
Github » Enterprise Server
Versions from including (>=) 3.6.0 and before (<) 3.6.18
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2023-23763

EPSS FAQ

0.07%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 32 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-23763

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	GitHub, Inc. (Products Only)
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2023-23763

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Assigned by: product-cna@github.com (Secondary)
CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-23763

https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.4-security-fixes

Release notes - GitHub Enterprise Server 3.9 Docs
Release Notes
https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.9-security-fixes

Release notes - GitHub Enterprise Server 3.8 Docs
Release Notes
https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.16-security-fixes

Release notes - GitHub Enterprise Server 3.7 Docs
Release Notes
https://docs.github.com/en/enterprise-server@3.6/admin/release-notes#3.6.18-security-fixes

Release notes - GitHub Enterprise Server 3.6 Docs
Release Notes

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Vulnerability Details : CVE-2023-23763

Products affected by CVE-2023-23763

Exploit prediction scoring system (EPSS) score for CVE-2023-23763

CVSS scores for CVE-2023-23763

CWE ids for CVE-2023-23763

References for CVE-2023-23763