Buffer overflow in Avast Free Antivirus
CVE-2015-8620
Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html (Exploit, VDB Entry, Third Party Advisory)
- seclists.org/fulldisclosure/2016/Feb/94 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-vir… (Exploit)
- www.securitytracker.com/id/1035093 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2015-8620?
- CVE-2015-8620 is a high-severity vulnerability in Avast Free Antivirus, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2016-04-13.
- How severe is CVE-2015-8620?
- High severity. CVSS v3 base score is 7.8 out of 10.