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Medium severity · published Feb 28, 2020
CVE-2020-9399
The Avast AV parsing engine allows virus-detection bypass via a crafted ZIP archive
5.5
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Antivirus For Linux · Avast
before 12.0 · source: NVD
AP
Antivirus Pro · Avast
before 12.0 · source: NVD
AP
Antivirus Pro Plus · Avast
before 12.0 · source: NVD
Affected product
AF
Antivirus For Linux
Avast
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9399
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9399
Third Party Advisory
https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.html
Mailing List
https://seclists.org/fulldisclosure/2020/Feb/35