Detections
Analytics

Alpine: multiple polkit packages: security update to 0.119-r8

high Tenable Self-Hosted Container Security Plugin ID 406441

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is
 a setuid tool designed to allow unprivileged users to run commands as privileged users according
 predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly
 and ends trying to execute environment variables as commands. An attacker can leverage this by crafting
 environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully
 executed the attack can cause a local privilege escalation given unprivileged users administrative rights
 on the target machine. (CVE-2021-4034)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-4034

Plugin Details

Severity: High

ID: 406441

Version: Revision 1.27

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

Percentile: 99.97

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-4034

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 1/25/2022

CISA Known Exploited Vulnerability Due Dates: 7/18/2022

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Local Privilege Escalation in polkits pkexec)

Reference Information

CVE: CVE-2021-4034