CVE-2021-21686

CWE-59CWE-22 — Path Traversal6 documents6 sources
Severity
8.1HIGH
EPSS
0.5%
top 33.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Jenkins JenkinsJenkins Project Jenkins
Timeline
PublishedNov 4
Latest updateMay 24

Description

File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NExploitability: 2.8 | Impact: 5.2

Affected Packages3 packages

▶NVDjenkins/jenkins< 2.303.3+1
▶Mavenorg.jenkins-ci.main:jenkins-core2.304 — 2.319+1
▶CVEListV5jenkins_project/jenkinsunspecified — 2.318+1

🔴Vulnerability Details

3
OSV
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
▶
GHSA
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
▶
CVEList
CVE-2021-21686: File path filters in the agent-to-controller security subsystem of Jenkins 2↗2021-11-04
▶

📋Vendor Advisories

2
Red Hat
jenkins: File path filters do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories↗2021-11-04
▶
Jenkins
Jenkins Security Advisory 2021-11-04↗2021-11-04
▶
CVE-2021-21686 (HIGH CVSS 8.1) | File path filters in the agent-to-c | cvebase.io