Arbitrary file upload in Avira Anti-Malware Sdk
CVE-2020-9320
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
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.029 (86.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
Weakness classification (CWE)
References
- blog.zoller.lu/p/from-low-hanging-fruit-department-avira.html (Third Party Advisory)
- www.zoller.lu/[TZO-01-2020] AVIRA Generic Bypass ISO.pdf
- packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.h… (VDB Entry, Third Party Advisory)
- seclists.org/fulldisclosure/2020/Feb/31 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-9320?
- CVE-2020-9320 is a medium-severity vulnerability in Avira Anti-Malware Sdk, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.5/10. Published 2020-02-20.
- How severe is CVE-2020-9320?
- Medium severity. CVSS v3 base score is 5.5 out of 10.