Medium severity · published Feb 20, 2020
CVE-2020-9320
Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive
5.5
CVSS
2.9%
EPSS
No
On KEV
Description
Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive. This affects versions before 8.3.54.138 of Antivirus for Endpoint, Antivirus for Small Business, Exchange Security (Gateway), Internet Security Suite for Windows, Prime, Free Security Suite for Windows, and Cross Platform Anti-malware SDK. NOTE: Vendor asserts that vulnerability does not exist in product
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)2.9% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Anti-malware Sdk · Avira
before 8.3.54.138 · source: NVD
AS
Antivirus Server · Avira
before 8.3.54.138 · source: NVD
AA
Avira Antivirus For Endpoint · Avira
before 8.3.54.138 · source: NVD
AA
Avira Antivirus For Small Business · Avira
before 8.3.54.138 · source: NVD
AE
Avira Exchange Security · Avira
before 8.3.54.138 · source: NVD
AF
Avira Free Security Suite · Avira
before 8.3.54.138 · source: NVD
AI
Avira Internet Security Suite · Avira
before 8.3.54.138 · source: NVD
AP
Avira Prime · Avira
before 8.3.54.138 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-9320
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-9320
Third Party Advisory
http://packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.html
Mailing List
http://seclists.org/fulldisclosure/2020/Feb/31
Third Party Advisory
https://blog.zoller.lu/p/from-low-hanging-fruit-department-avira.html
www.zoller.lu
https://www.zoller.lu/%5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf