CVE-2021-21673

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 CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.

References

https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387

http://www.openwall.com/lists/oss-security/2021/06/30/1

Details

Source: MITRE

Published: 2021-06-30

Updated: 2021-07-06

Type: CWE-601

Risk Information

CVSS v2

Base Score: 5.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Impact Score: 4.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.1

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

Impact Score: 2.7

Exploitability Score: 2.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:jenkins:cas:*:*:*:*:*:jenkins:*:* versions up to 1.6.0 (inclusive)

Tenable Plugins

View all (1 total)

IDNameProductFamilySeverity
151193Jenkins LTS < 2.289.2 / Jenkins weekly < 2.300 Multiple VulnerabilitiesNessusCGI abuses
medium