Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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.

Published

2016-04-13T14:59:03.437

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	avast	avast_free_antivirus	≤ 11.1.2245	Yes
Application	avast	avast_internet_security	≤ 11.1.2245	Yes
Application	avast	avast_premier	≤ 11.1.2245	Yes
Application	avast	avast_pro_antivirus	≤ 11.1.2245	Yes

References

http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2016/Feb/94 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1035093 Third Party Advisory, VDB Entry ([email protected])
https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/ Exploit ([email protected])
http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2016/Feb/94 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1035093 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/ Exploit (af854a3a-2127-422b-91ae-364da2661108)