CVE-2021-21687 — Missing Authorization in Jenkins

CWE-862 — Missing AuthorizationCWE-59 — Link Following6 documents6 sources
Severity
9.1CRITICALNVD
EPSS
0.3%
top 49.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
JenkinsJenkins Project Jenkins
Timeline
PublishedNov 4
Latest updateMay 24

Description

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitability: 3.9 | Impact: 5.2

Affected Packages2 packages

▶NVDjenkins/jenkins< 2.303.3+1
▶CVEListV5jenkins_project/jenkinsunspecified — 2.318+1

🔴Vulnerability Details

3
GHSA
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
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OSV
Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins↗2022-05-24
▶
CVEList
CVE-2021-21687: Jenkins 2↗2021-11-04
▶

📋Vendor Advisories

2
Red Hat
jenkins: FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link↗2021-11-04
▶
Jenkins
Jenkins Security Advisory 2021-11-04↗2021-11-04
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