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 2.318 and earlier, LTS 2.303.2 and earlier.

Published: Nov 4, 2021
Updated: Oct 26, 2023
CVE: CVE-2021-21693
GHSA: GHSA-929w-q433-4h9x
Severity: Critical
Exploit:

CVSS v3:

Severity: Critical
Score: 9.8
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

Severity: High
Score: 7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

CWE-863
CWE-285

OWASP TOP 10:

A5 - Broken Access Control

Affected Software
References

Software	From	Fixed in
jenkins / jenkins	-	2.303.3
jenkins / jenkins	-	2.319
org.jenkins-ci.main / jenkins-core	-	2.303.3
org.jenkins-ci.main / jenkins-core	2.304	2.319

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455

Vulnerability Database

289,599

CVE-2021-21693