CVE-2021-45337 — Improper Privilege Management in Antivirus

CWE-269 — Improper Privilege Management3 documents3 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 70.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Avast Antivirus
Timeline
PublishedDec 27
Latest updateDec 28

Description

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 vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 2.0 | Impact: 6.0

Affected Packages1 packages

▶NVDavast/antivirus< 20.8

🔴Vulnerability Details

2
GHSA
GHSA-p4fv-c2p2-rfjh: Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20↗2021-12-28
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CVEList
CVE-2021-45337: Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20↗2021-12-27
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CVE-2021-45337 — Improper Privilege Management in Avast | cvebase