CVE-2021-21639

Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the config.xml REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.

Published: Apr 7, 2021
Updated: Oct 26, 2023
CVE: CVE-2021-21639
GHSA: GHSA-pvwx-3jx5-24r2
Severity: Low
Exploit:

CVSS v3:

Severity: Low
Score: 4.3
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v2:

Severity: Low
Score: 4
AV:N/AC:L/Au:S/C:N/I:P/A:N

CWEs:

CWE-20

Affected Software
References

Software	From	Fixed in
jenkins / jenkins	-	2.277.1.x
jenkins / jenkins	-	2.286.x
org.jenkins-ci.main / jenkins-core	-	2.277.2
org.jenkins-ci.main / jenkins-core	2.278	2.287

http://www.openwall.com/lists/oss-security/2021/04/07/2
https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1721

Vulnerability Database

289,599

CVE-2021-21639