CVE Vulnerability

CVE-2021-45339

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.

7.2 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0 Exploit Third Party Advisory
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0 Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*
Information

Published : 2021-12-27 02:15

Updated : 2022-07-12 05:42

NVD link : CVE-2021-45339

Mitre link : CVE-2021-45339

Products Affected
No products.
CWE
CWE-863