Security Bulletin: Polkit as used by IBM® QRadar SIEM is vulnerable to privilege escalation (CVE-2021-4034)

Summary

There is a privilege escalation vulnerability in Polkit which is used by IBM® QRadar SIEM indirectly as a dependency.

Vulnerability Details

CVEID:CVE-2021-4034
**DESCRIPTION:**Polkit could allow a local authenticated attacker to gain elevated privileges on the system, caused by incorrect handling of the argument vectors in the pkexec utility. By crafting environment variables in a specific way, an attacker could exploit this vulnerability to execute commands with root privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/218087 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM QRadar SIEM 7.5.0 GA

IBM QRadar SIEM 7.4.3 GA - 7.4.3 Fix Pack 4

IBM QRadar SIEM 7.3.3 GA - 7.3.3 Fix Pack 10

Remediation/Fixes

QRadar / QRM / QVM / QRIF / QNI 7.5.0 Update Pack 1

QRadar / QRM / QVM / QRIF / QNI 7.4.3 Fix Pack 4 Interim Fix 04

QRadar / QRM / QVM / QRIF / QNI 7.3.3 Fix Pack 10 Interim Fix 02

Workarounds and Mitigations

None