CVE-2020-9399
MEDIUMCVSS 5.5/10EPSS 1.14%
Last modified
CVE-2020-9399 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Avast | Antivirus For Linux | < 12.0 |
| Avast | Antivirus Pro | < 12.0 |
| Avast | Antivirus Pro Plus | < 12.0 |
References
- https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.htmlThird Party Advisory
- https://seclists.org/fulldisclosure/2020/Feb/35Mailing List, Third Party Advisory
- https://blog.zoller.lu/p/tzo-23-2020-avast-generic-archive.htmlThird Party Advisory
- https://seclists.org/fulldisclosure/2020/Feb/35Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9399?
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.
How severe is CVE-2020-9399?
CVE-2020-9399 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9399?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-9399?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST