Vulnerability Details : 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.
Vulnerability category: Gain privilege
Products affected by CVE-2021-45337
- cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-45337
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-45337
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
2.0
|
6.0
|
NIST |
References for CVE-2021-45337
-
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST3%20%26%20CVE-2021-AVST4%20%26%20CVE-2021-AVST5
Vulnerability-Disclosures/CVE-2021-AVST3 & CVE-2021-AVST4 & CVE-2021-AVST5 at main · the-deniss/Vulnerability-Disclosures · GitHubExploit;Third Party Advisory
-
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0
Researcher Wladimir Palant supports Avast's efforts to protect its users, by submitting vulnerability reportsVendor Advisory
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