Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13Mmh2LXJjcXItMmg3cs4AAoE2

View name validation bypass in Jenkins

Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not properly check that a newly created view has an allowed name. When a form to create a view is submitted, the name is included twice in the submission. One instance is validated, but the other instance is used to create the value.

This allows attackers with View/Create permission to create views with invalid or already-used names.

Jenkins 2.287, LTS 2.277.2 uses the same submitted value for validation and view creation.

Permalink: https://github.com/advisories/GHSA-w2hv-rcqr-2h7r
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13Mmh2LXJjcXItMmg3cs4AAoE2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: 4 months ago

CVSS Score: 4.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Identifiers: GHSA-w2hv-rcqr-2h7r, CVE-2021-21640
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-21640
• https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1871
• http://www.openwall.com/lists/oss-security/2021/04/07/2
• https://github.com/jenkinsci/jenkins/commit/42e2c74049ddf5e0aca1fe6aadc7b24fdabb5494
• https://github.com/advisories/GHSA-w2hv-rcqr-2h7r

Repository: https://github.com/jenkinsci/jenkins
Blast Radius: 1.0

Affected Packages