CVE-2023-3909 is a Regular Expression Denial of Service (ReDoS) vulnerability affecting GitLab CE/EE versions 12.3 through 16.3.5, 16.4 through 16.4.1, and 16.5.0. An authenticated attacker can trigger the denial of service by injecting a large string into the 'timeout' input within a .gitlab-ci.yml file. This vulnerability has a CVSS score of 6.5 (Medium), indicating a network-based attack with low complexity that can lead to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in the KEV catalog, though it has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 12.3.0, < 16.3.6CPE matchmatch criteria | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | ||
>= 12.3.0, < 16.3.6CPE matchmatch criteria | cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | ||
>= 16.4.0, < 16.4.2CPE matchmatch criteria | cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* | ||
>= 16.4.0, < 16.4.2CPE matchmatch criteria | cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* | ||
16.5.0CPE matchmatch criteria | cpe:2.3:a:gitlab:gitlab:16.5.0:*:*:*:community:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.