CVE-2021-21606 – org.jenkins-ci.main:jenkins-core

Package

Manager: maven
Name: org.jenkins-ci.main:jenkins-core
Vulnerable Version: >=0 <2.263.2 || >=2.264 <2.275

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00082 pctl0.24839

Details

Arbitrary file existence check in file fingerprints in Jenkins Jenkins provides a feature for jobs to store and track fingerprints of files used during a build. Jenkins 2.274 and earlier, LTS 2.263.1 and earlier provides a REST API to check where a given fingerprint was used by which builds. This endpoint does not fully validate that the provided fingerprint ID is properly formatted before checking for the XML metadata for that fingerprint on the controller file system. This allows attackers with Overall/Read permission to check for the existence of XML files on the controller file system where the relative path can be constructed as 32 characters. Jenkins 2.275, LTS 2.263.2 validates that a fingerprint ID is properly formatted before checking for its existence.

Metadata

Created: 2022-05-24T17:39:12Z
Modified: 2022-12-13T15:20:03Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-f585-9fw3-rj2m/GHSA-f585-9fw3-rj2m.json
CWE IDs: ["CWE-20"]
Alternative ID: GHSA-f585-9fw3-rj2m
Finding: F184
Auto approve: 1