CVE-2021-45339

Published: Dec 27, 2021Modified: Nov 21, 2024

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by "hollowing" trusted process which could lead to the bypassing of Avast self-defense.

Affected (1)

Products: Avast: Antivirus

Avast

1 product

Antivirus

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Avast Antivirus	Before 20.4

Related CWEs

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (4)

https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0

Source: cve@mitre.org

ExploitThird Party Advisory

https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0

Source: cve@mitre.org

Vendor Advisory

https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.