CVE-2021-45337

Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.exe which could lead to acquire antimalware (AM-PPL) protection.

CVSS v3 8.8 HIGH
CVSS v2.0 7.2 HIGH

8.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST3%20%26%20CVE-2021-AVST4%20%26%20CVE-2021-AVST5	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 (hide)

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

History

No history.

Information

Published : 2021-12-27 14:15

Updated : 2022-07-12 17:42

NVD link : CVE-2021-45337

Mitre link : CVE-2021-45337

CVE.ORG link : CVE-2021-45337

JSON object : View

Products Affected

avast

antivirus

CWE

NVD-CWE-noinfo

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8.8 /10