CVE-2021-21639

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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.

References

https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1721

http://www.openwall.com/lists/oss-security/2021/04/07/2

Details

Source: MITRE

Published: 2021-04-07

Updated: 2021-04-13

Type: CWE-20

Risk Information

CVSS v2

Base Score: 4

Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 4.3

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 2.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* versions up to 2.277.1 (inclusive)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* versions up to 2.286 (inclusive)

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
155586Jenkins Enterprise and Operations Center < 2.222.43.0.4 / 2.249.30.0.4 / 2.277.2.3 Multiple Vulnerabilities (CloudBees Security Advisory 2021-04-07)NessusCGI abuses
medium
152103RHEL 7 / 8 : OpenShift Container Platform 4.8.2 packages and (RHSA-2021:2437)NessusRed Hat Local Security Checks
high
148418Jenkins LTS < 2.277.2 / Jenkins weekly < 2.287 Multiple VulnerabilitiesNessusCGI abuses
medium