CVE-2021-21693

CWE-863 — Incorrect AuthorizationCWE-276 — Incorrect Default PermissionsCWE-285CWE-22 — Path Traversal7 documents6 sources
Severity
9.8CRITICAL
EPSS
0.5%
top 33.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Jenkins JenkinsJenkins Project Jenkins
Timeline
PublishedNov 4
Latest updateMay 24

Description

When creating temporary files, agent-to-controller access to create those files is only checked after they've been created 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
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
▶
GHSA
Path traversal in Onionshare↗2022-01-21
▶
CVEList
CVE-2021-21693: When creating temporary files, agent-to-controller access to create those files is only checked after they've been created in Jenkins 2↗2021-11-04
▶

📋Vendor Advisories

2
Red Hat
jenkins: When creating temporary files, permission to create files is only checked after they’ve been created.↗2021-11-04
▶
Jenkins
Jenkins Security Advisory 2021-11-04↗2021-11-04
▶
CVE-2021-21693 (CRITICAL CVSS 9.8) | When creating temporary files | cvebase.io