CVE-2020-9399

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive. This affects versions before 12 definitions 200114-0 of Antivirus Pro, Antivirus Pro Plus, and Antivirus for Linux.

El motor de análisis de Avast AV permite la detección de virus por medio de un archivo ZIP diseñado. Esto afecta a las versiones anteriores a 12 definiciones de 200114-0 de Antivirus Pro, Antivirus Pro Plus y Antivirus para Linux.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-02-25 CVE Reserved
2020-02-26 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-436: Interpretation Conflict

CAPEC

References (2)

URL	Tag	Source
https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.html	Third Party Advisory
https://seclists.org/fulldisclosure/2020/Feb/35	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Avast Search vendor "Avast"		Antivirus For Linux Search vendor "Avast" for product "Antivirus For Linux"				< 12.0 Search vendor "Avast" for product "Antivirus For Linux" and version " < 12.0"		-		Affected
Avast Search vendor "Avast"		Antivirus Pro Search vendor "Avast" for product "Antivirus Pro"				< 12.0 Search vendor "Avast" for product "Antivirus Pro" and version " < 12.0"		-		Affected
Avast Search vendor "Avast"		Antivirus Pro Plus Search vendor "Avast" for product "Antivirus Pro Plus"				< 12.0 Search vendor "Avast" for product "Antivirus Pro Plus" and version " < 12.0"		-		Affected