CVE-2024-23903 json
Non-constant time webhook token comparison in Jenkins GitLab Branch Source Plugin
published 2024-01-24 2 y ago modified 2026-06-17 4 mo ago also GHSA-f67f-2j6r-m4c9 , EUVD-2024-0341
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.
Patch / fix
- maven io.jenkins.plugins:gitlab-branch-source 688.v5fa
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.jenkins.plugins:gitlab-branch-source | <688.v5fa |
688.v5fa |
Affected products
- Jenkins Project Jenkins GitLab Branch Source Plugin
Classification
- Weakness
-
- CWE-697 Incorrect Comparison
References
-
github.com
/jenkinsci/gitlab-branch-source-plugin/commit/8bfe1046cf342b99419457b9336addbbf346f89a
web
-
jenkins.io
/security/advisory/2024-01-24/#SECURITY-2871
vendor-advisory, web
-
openwall.com
/lists/oss-security/2024/01/24/6
web, mailing-list
-
nvd.nist.gov
/vuln/detail/CVE-2024-23903
advisory
-
github.com
/jenkinsci/gitlab-branch-source-plugin
package
Sources
- CVE List CVE-2024-23903
- GitHub Advisory GHSA-f67f-2j6r-m4c9
- NVD CVE-2024-23903
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