CVE-2006-5646

Sophos AntiVirus - '.CHM' File Heap Overflow (PoC)

Severity Score

9.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Heap-based buffer overflow in Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11, when archive scanning is enabled, allows remote attackers to trigger a denial of service (memory corruption) via a CHM file with an LZX decompression header that specifies a Window_size of 0.

Desbordamiento de búfer basado en montón en Sophos Anti-Virus y Endpoint Security versiones anteriores a 6.0.5, Anti-Virus para Linux anteriores a 5.0.10, y otras plataformas anteriores a 4.11, cuando el escaneo de archivos está habilitado, permite a atacantes remotos disparar una denegación de servicio (corrupción de memoria) a través de un archivo CHM con una cabecera de descompresión LZX que especifica un tamaño de ventana 0.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2006-11-01 CVE Reserved
2006-11-01 CVE Published
2006-12-10 First Exploit
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (7)

URL	Tag	Source
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=452	Third Party Advisory
http://securitytracker.com/id?1017132	Vdb Entry
http://www.securityfocus.com/bid/20816	Vdb Entry
http://www.sophos.com/support/knowledgebase/article/7609.html	X_refsource_confirm

URL	Date	SRC
https://www.exploit-db.com/exploits/2910	2006-12-10

URL	Date	SRC

URL	Date	SRC
http://secunia.com/advisories/22591	2011-03-07
http://www.vupen.com/english/advisories/2006/4239	2011-03-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.04 Search vendor "Sophos" for product "Anti-virus" and version "4.04"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.05 Search vendor "Sophos" for product "Anti-virus" and version "4.05"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.5.3 Search vendor "Sophos" for product "Anti-virus" and version "4.5.3"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.5.4 Search vendor "Sophos" for product "Anti-virus" and version "4.5.4"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.5.11 Search vendor "Sophos" for product "Anti-virus" and version "4.5.11"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.5.12 Search vendor "Sophos" for product "Anti-virus" and version "4.5.12"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.7.1 Search vendor "Sophos" for product "Anti-virus" and version "4.7.1"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				4.7.2 Search vendor "Sophos" for product "Anti-virus" and version "4.7.2"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.0.1 Search vendor "Sophos" for product "Anti-virus" and version "5.0.1"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.0.2 Search vendor "Sophos" for product "Anti-virus" and version "5.0.2"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.0.4 Search vendor "Sophos" for product "Anti-virus" and version "5.0.4"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.1 Search vendor "Sophos" for product "Anti-virus" and version "5.1"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.2 Search vendor "Sophos" for product "Anti-virus" and version "5.2"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				5.2.1 Search vendor "Sophos" for product "Anti-virus" and version "5.2.1"		-		Affected
Sophos Search vendor "Sophos"		Anti-virus Search vendor "Sophos" for product "Anti-virus"				6.0.4 Search vendor "Sophos" for product "Anti-virus" and version "6.0.4"		-		Affected
Sophos Search vendor "Sophos"		Endpoint Security Search vendor "Sophos" for product "Endpoint Security"				<= 6.04 Search vendor "Sophos" for product "Endpoint Security" and version " <= 6.04"		-		Affected