CVE-2023-6847 Improper Authentication in GitHub Enterprise Server leading to Authentication Bypass for Public Repository Data

High 7.5 Published 21 Dec 2023 Updated 2 Aug 2024

Attacker with network access can bypass Private Mode authentication to read public repository data via crafted API requests.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-6847?

CVE-2023-6847 is a high-severity authentication bypass vulnerability in Github Enterprise Server, published on 21 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed a bypass of Private Mode by using a specially crafted API request. To exploit this vulnerability, an attacker would need network access to the Enterprise Server appliance configured in Private Mode. This vulnerability affected all versions of GitHub Enterprise Server since 3.9 and was fixed in version 3.9.7, 3.10.4, and 3.11.1. This vulnerability was reported via the GitHub Bug Bounty program.

Weakness: CWE-287

Which versions are affected by CVE-2023-6847?

It affects 1 product.

Products include Github Enterprise Server.

How do I fix CVE-2023-6847?

No fix has been published for CVE-2023-6847 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-6847 being exploited?

There is no known exploitation of CVE-2023-6847 in the wild and no public exploit code.

All Github Enterprise Server vulnerabilities

Sources

Also known as GHSA-cfmj-7rv7-v356.