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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.50% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- avast/avast free antivirus · avast/avast internet security · avast/avast premier · avast/avast pro antivirus
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2016/Feb/94Exploit, Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1035093Third Party Advisory, VDB Entry
- https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/Exploit
- http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2016/Feb/94Exploit, Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1035093Third Party Advisory, VDB Entry
- https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/Exploit
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.