7.8
HIGH
CVE-2015-8620
Avast Virtualization Driver Heap Buffer Overflow
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.

INFO

Published Date :

April 13, 2016, 2:59 p.m.

Last Modified :

Nov. 21, 2024, 2:38 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2015-8620 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Avast avast_free_antivirus
2 Avast avast_internet_security
3 Avast avast_premier
4 Avast avast_pro_antivirus
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2015-8620.

URL Resource
http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2016/Feb/94 Exploit Mailing List Third Party Advisory
http://www.securitytracker.com/id/1035093 Third 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.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2016/Feb/94 Exploit Mailing List Third Party Advisory
http://www.securitytracker.com/id/1035093 Third Party Advisory VDB Entry
https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/ Exploit

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2015-8620 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-8620 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html
    Added Reference http://seclists.org/fulldisclosure/2016/Feb/94
    Added Reference http://www.securitytracker.com/id/1035093
    Added Reference https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Mar. 26, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Removed CVSS V3 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2016/Feb/94 Exploit http://seclists.org/fulldisclosure/2016/Feb/94 Exploit, Mailing List, Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1035093 No Types Assigned http://www.securitytracker.com/id/1035093 Third Party Advisory, VDB Entry
    Changed CPE Configuration OR *cpe:2.3:a:avast:avast_free_antivirus:*:*:*:*:*:*:*:* versions up to (including) v11.1.2245 *cpe:2.3:a:avast:avast_internet_security:*:*:*:*:*:*:*:* versions up to (including) v11.1.2245 *cpe:2.3:a:avast:avast_premier:*:*:*:*:*:*:*:* versions up to (including) v11.1.2245 *cpe:2.3:a:avast:avast_pro_antivirus:*:*:*:*:*:*:*:* versions up to (including) v11.1.2245 OR *cpe:2.3:a:avast:avast_free_antivirus:*:*:*:*:*:*:*:* versions up to (including) 11.1.2245 *cpe:2.3:a:avast:avast_internet_security:*:*:*:*:*:*:*:* versions up to (including) 11.1.2245 *cpe:2.3:a:avast:avast_premier:*:*:*:*:*:*:*:* versions up to (including) 11.1.2245 *cpe:2.3:a:avast:avast_pro_antivirus:*:*:*:*:*:*:*:* versions up to (including) 11.1.2245
  • Modified Analysis by [email protected]

    Apr. 14, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:avast:avast_free_antivirus:v11.1.2245:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:avast:avast_premier:v11.1.2245:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:avast:avast_pro_antivirus:v11.1.2245:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:avast:avast_internet_security:v11.1.2245:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html No Types Assigned http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html Exploit
    Changed Reference Type https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/ No Types Assigned https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/ Exploit
    Changed Reference Type http://seclists.org/fulldisclosure/2016/Feb/94 No Types Assigned http://seclists.org/fulldisclosure/2016/Feb/94 Exploit
    Added CWE CWE-119
  • Initial Analysis by [email protected]

    Apr. 14, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.01%

score

0.36566

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability