CVE-2021-45339

Published: Dic 27, 2021 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2021-32112 Aliases: GSD-2021-45339
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,8
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 7,2
Source: [email protected]
Access Vector: local
Access Complexity: low
Authentication: none
Confidentiality: complete
Integrity: complete
Availability: complete

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

EPSS Score Trend (Last 90 Days)

863

Incorrect Authorization

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Application

Antivirus by Avast

Product Information
Vendor Avast
Product Antivirus
Version Range Affected
To 20.4 (exclusive)
cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/the-deniss/Vulnerability-Disclosures/tre…
Exploit Third Party Advisory
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0
https://www.avast.com/hacker-hall-of-fame/en/researcher-dav…
Vendor Advisory
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-anti…
https://github.com/the-deniss/Vulnerability-Disclosures/tre…
Exploit Third Party Advisory
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0
https://www.avast.com/hacker-hall-of-fame/en/researcher-dav…
Vendor Advisory
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-anti…