CVE-2021-21691

CWE-59CWE-863 — Incorrect AuthorizationCWE-276 — Incorrect Default PermissionsCWE-306 — Missing Authentication7 documents6 sources
Severity
9.8CRITICAL
EPSS
0.6%
top 29.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Jenkins JenkinsJenkins Project Jenkins
Timeline
PublishedNov 4
Latest updateMay 24

Description

Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

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

4
GHSA
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
▶
OSV
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
▶
GHSA
Improper Access Control in Onionshare↗2022-01-21
▶
CVEList
CVE-2021-21691: Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2↗2021-11-04
▶

📋Vendor Advisories

2
Jenkins
Jenkins Security Advisory 2021-11-04↗2021-11-04
▶
Red Hat
jenkins: Creating symbolic links is possible without the symlink permission↗2021-11-04
▶