What is CVE-2024-2440?

CVE-2024-2440 is a medium-severity vulnerability in Github Enterprise Server, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 5.5/10. Published 2024-04-19.

How severe is CVE-2024-2440?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Github Enterprise Server

CVE-2024-2440

A race condition in GitHub Enterprise Server allowed an existing admin to maintain permissions on a detached repository by making a GraphQL mutation to alter repository permissions while the repository is detached. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.13 and was fixed in versions 3.9.13, 3.10.10, 3.11.8 and 3.12.1. This vulnerability was reported via the GitHub Bug Bounty program.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.005 (36.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:L.

Affected products

Github Enterprise Server — versions 3.9, 3.10, 3.11
Github Enterprise_server

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)

Frequently asked questions

What is CVE-2024-2440?: CVE-2024-2440 is a medium-severity vulnerability in Github Enterprise Server, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 5.5/10. Published 2024-04-19.
How severe is CVE-2024-2440?: Medium severity. CVSS v3 base score is 5.5 out of 10.