CVE-2015-8620

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Desbordamiento de buffer basado en memoria dinámica en el controlador de virtualización de Avast (aswSnx.sys) en Avast Internet Security, Pro Antivirus, Premier y Free Antivirus en versiones anteriores a 11.1.2253 permite a usuarios locales obtener privilegios a través de una ruta de archivo Unicode en una petición IOCTL.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-12-23 CVE Reserved
2016-02-21 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2024-08-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (4)

URL	Tag	Source
http://www.securitytracker.com/id/1035093	Third Party Advisory

URL	Date	SRC
http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html	2024-08-06
http://seclists.org/fulldisclosure/2016/Feb/94	2024-08-06
https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver	2024-08-06

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Avast Search vendor "Avast"		Avast Free Antivirus Search vendor "Avast" for product "Avast Free Antivirus"				<= 11.1.2245 Search vendor "Avast" for product "Avast Free Antivirus" and version " <= 11.1.2245"		-		Affected
Avast Search vendor "Avast"		Avast Internet Security Search vendor "Avast" for product "Avast Internet Security"				<= 11.1.2245 Search vendor "Avast" for product "Avast Internet Security" and version " <= 11.1.2245"		-		Affected
Avast Search vendor "Avast"		Avast Premier Search vendor "Avast" for product "Avast Premier"				<= 11.1.2245 Search vendor "Avast" for product "Avast Premier" and version " <= 11.1.2245"		-		Affected
Avast Search vendor "Avast"		Avast Pro Antivirus Search vendor "Avast" for product "Avast Pro Antivirus"				<= 11.1.2245 Search vendor "Avast" for product "Avast Pro Antivirus" and version " <= 11.1.2245"		-		Affected