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Kaspersky Anti-Virus Engine (KAV) is "a popular virus scanning engine for Windows and Linux. The Kaspersky Anti-Virus Engine is commonly included in various vendors' network mail gateway and host-based antivirus products".
Remote exploitation of a buffer overflow vulnerability in Kaspersky Labs' Anti-Virus Engine allows remote attackers to execute arbitrary code. Kaspersky Anti-Virus Engine is used by multiple vendors in Linux virus scanner products and exploitation requires minimal interaction by a targeted user. |
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Credit:
The information has been provided by iDEFENSE Labs Security Advisories.
The original article can be found at: http://www.idefense.com/application/poi/display?id=318&type=vulnerabilities
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Vulnerable Systems:
* Kaspersky Personal version 5.0.227
* Kaspersky Anti-Virus On-Demand Scanner for Linux version 5.0.5
* F-Secure Anti-Virus for Linux version 4.50
The Kasperksy Anti-Virus Engine (KAV) is found in many gateway and host-based anti-virus scanners. The vulnerability specifically exists in the CHM file parser within the KAV engine. When a corrupt CHM file is scanned by the KAV engine, a heap overflow can occur which allows remote attackers to execute arbitrary code with permissions of the anti-virus application's process, usually user privileges. On Microsoft platforms, affected software has not been shown to execute arbitrary code, however Kaspersky Anti-Virus will fail to scan any files after a corrupt CHM file has been encountered, thus allowing further malicious codes to reach the target.
Analysis:
Successful exploitation of the vulnerability can result in remote arbitrary code execution or the disabling of anti-virus functionality.
In the case of Linux platforms, specifically network gateways, user interaction is not required and can lead to the compromise of trusted systems. In addition, compromising mail gateways can lead to further compromise of internal hosts by injecting malicious code into mail attachments.
Vendor response:
The vendor has notified iDEFENSE that the vulnerability has been addressed via a signature update. Users who have updated their signatures after July 2005 are reportedly not affected. Update your anti-virus signatures to ensure the vulnerability has been addressed.
CVE Information:
CAN-2005-2937
Disclosure Timeline:
06/20/2005 - Initial vendor notification
10/05/2005 - Initial vendor response
10/10/2005 - Public disclosure
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