PT-2023-19186 · Github · Github Enterprise Server

Published 2023-04-07 · Updated 2023-04-18 · CVE-2023-23761

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.9

Description An improper authentication issue was identified that allowed unauthorized modification of other users' secret gists by authenticating through an SSH certificate authority, provided the secret gist's URL was known.

Recommendations For versions prior to 3.4.18, update to version 3.4.18 or later. For versions prior to 3.5.15, update to version 3.5.15 or later. For versions prior to 3.6.11, update to version 3.6.11 or later. For versions prior to 3.7.8, update to version 3.7.8 or later. For versions prior to 3.8.1, update to version 3.8.1 or later. As a temporary workaround, consider restricting access to SSH certificate authority authentication until a patch is applied.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2023-23761

Affected Products

Github Enterprise Server

References · 8

• https://osv.dev/vulnerability/CVE-2023-23761 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-23761 · Security Note
• https://docs.github.com/en/enterprise-server@3.6/admin/release-notes#3.6.11 · Note
• https://docs.github.com/en/enterprise-server@3.4/admin/release-notes#3.4.18 · Note
• https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.1 · Note
• https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.8 · Note
• https://t.me/cibsecurity/61695 · Telegram Post
• https://docs.github.com/en/enterprise-server@3.5/admin/release-notes#3.5.15 · Note