Jenkins weekly < 2.280 Privilege Escalation

high Nessus Plugin ID 148401
New! Plugin Severity Now Using CVSS v3

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

Synopsis

An application running on a remote web server host is affected by a privilege escalation vulnerability

Description

According to its self-reported version number, the version of Jenkins running on the remote web server is Jenkins weekly prior to 2.280. It is, therefore, affected by a privilege escalation vulnerability due to a failure in saving the SecurityContext if it is changed more than once in a single request. If the application's intent is to only allow the user to run with elevated privileges in a small portion of the application, an authenticated remote attacker can leverage this bug to extend those privileges to the rest of the application.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade Jenkins weekly to version 2.280 or later

See Also

https://jenkins.io/security/advisory/2021-02-19

Plugin Details

Severity: High

ID: 148401

File Name: jenkins_2_280.nasl

Version: 1.4

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 4/9/2021

Updated: 10/1/2021

Dependencies: jenkins_detect.nasl, jenkins_win_installed.nbin, jenkins_nix_installed.nbin, macosx_jenkins_installed.nbin

Risk Information

CVSS Score Source: CVE-2021-22112

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cloudbees:jenkins, cpe:/a:jenkins:jenkins

Required KB Items: installed_sw/Jenkins

Exploit Ease: No known exploits are available

Patch Publication Date: 2/19/2021

Vulnerability Publication Date: 2/19/2021

Reference Information

CVE: CVE-2021-22112