The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Sophos Antivirus: several vulnerabilities

Synthesis of the vulnerability 

An attacker can create a malicious VB6/CAB/RAR/PDF file which corrupts the Sophos Antivirus memory, in order to execute code on victim's computer.
Impacted products: AsyncOS, Cisco ESA, IronPort Email, IronPort Web, Solaris, Sophos AV.
Severity of this bulletin: 3/4.
Number of vulnerabilities in this bulletin: 4.
Creation date: 05/11/2012.
Références of this threat: BID-56401, bulletinjul2017, CERTA-2012-AVI-627, CERTA-2012-AVI-637, cisco-sa-20121108-sophos, CSCud10556, CVE-2012-6706, VIGILANCE-VUL-12111, VU#662243.

Description of the vulnerability 

The Sophos Antivirus product analyzes viruses contained in documents handled by users. However, malformed documents are not correctly decoded.

An ActiveX created with Visual Basic 6 generates an integer overflow. [severity:3/4]

A malicious CAB archive creates a buffer overflow. [severity:3/4]

A malicious RAR archive corrupts the memory (VIGILANCE-VUL-23073). [severity:3/4; CVE-2012-6706]

A malicious PDF document generates a buffer overflow. [severity:3/4]

An attacker can therefore create a malicious VB6/CAB/RAR/PDF file which corrupts the Sophos Antivirus memory, in order to execute code on victim's computer.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This weakness bulletin impacts software or systems such as AsyncOS, Cisco ESA, IronPort Email, IronPort Web, Solaris, Sophos AV.

Our Vigil@nce team determined that the severity of this computer weakness is important.

The trust level is of type confirmed by the editor, with an origin of document.

This bulletin is about 4 vulnerabilities.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this vulnerability announce.

Solutions for this threat 

Sophos Antivirus: update on 5th of November 2012.
The update published on 5th of November 2012 is corrected.

Cisco Ironport: Sophos Anti-Virus version 3.2.07.363_4.83.
The version 3.2.07.363_4.83 is fixed:
  http://www.ironport.com/support/contact_support.html

Oracle Solaris: patch for third party software of July 2017 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a cybersecurity bulletin. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.