CVE-2021-45338 Information

Description

Multiple privilege escalation vulnerabilities in Avast Antivirus prior to 20.4 allow a local user to gain elevated privileges by calling unnecessarily powerful internal methods of the main antivirus service which could lead to the (1) arbitrary file delete (2) write and (3) reset security.

CVSS Vector

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

Reference

https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.2 https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.3 https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.1 https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8