Sophos Anti-Virus up to 6.0.4 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Sophos Anti-Virus up to 6.0.4. This vulnerability affects unknown code. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2006-5646. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Sophos Anti-Virus up to 6.0.4 (Anti-Malware Software). This affects an unknown functionality. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

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.

The bug was discovered 10/27/2006. The weakness was shared 11/01/2006 by Damian Put (Website). The advisory is shared at vupen.com. This vulnerability is uniquely identified as CVE-2006-5646 since 11/01/2006. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version 6.0.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (29922), Exploit-DB (2910), SecurityFocus (BID 20816†), OSVDB (30113†) and Secunia (SA22591†). The entries VDB-2642, VDB-2641, VDB-2644 and VDB-2643 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Anti-Virus 6.0.5
Fortigate IPS: 🔍

Timelineinfo

10/27/2006 🔍
10/27/2006 +0 days 🔍
10/30/2006 +3 days 🔍
10/30/2006 +0 days 🔍
10/30/2006 +0 days 🔍
11/01/2006 +2 days 🔍
11/01/2006 +0 days 🔍
11/01/2006 +0 days 🔍
09/04/2007 +307 days 🔍
03/12/2015 +2746 days 🔍
04/26/2026 +4063 days 🔍

Sourcesinfo

Vendor: sophos.com

Advisory: vupen.com⛔
Researcher: Damian Put
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-5646 (🔍)
GCVE (CVE): GCVE-0-2006-5646
GCVE (VulDB): GCVE-100-33069
X-Force: 29922
SecurityFocus: 20816 - Sophos Antivirus Multiple Denial of Service and Memory Corruption Vulnerabilities
Secunia: 22591
OSVDB: 30113 - CVE-2006-5646 - Anti-Virus and Endpoint Security - Buffer Overflow Issue
SecurityTracker: 1017132
Vulnerability Center: 15983 - Sophos Anti-Virus and Endpoint Security Remote DoS via a CHM File, Low
Vupen: ADV-2006-4239

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/12/2015 22:21
Updated: 04/26/2026 02:07
Changes: 03/12/2015 22:21 (74), 07/25/2019 12:07 (3), 04/26/2025 18:05 (17), 04/26/2026 02:07 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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