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[IVIZ-08-013] Avast antivirus for Linux multiple vulnerabilities


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Date: Wed, 10 Dec 2008 17:27:26 +0530
From: "iViZ Security Advisories" <advisories@ivizsecurity.com.>
To: [email protected], [email protected]
Subject: [IVIZ-08-013] Avast antivirus for Linux multiple vulnerabilities
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-----------------------------------------------------------------------
[ iViZ Security Advisory 08-013                            10/12/2008 ]
iViZ Techno Solutions Pvt. Ltd.
                                            http://www.ivizsecurity.com

* Title:     Avast antivirus for Linux multiple vulnerabilities.
* Date:      10/12/2008
* Software:  Avast for Workstations v1.0.8


--[ Synopsis:

    Multiple buffer overflows were discovered in the GNU/Linux
    version of Avast when analyzing corrupted ISO and RPM files.


--[ Affected Software:

  * Avast for Workstations v1.0.8 Trial versions, possibly others.


--[ Impact:

    Remove DoS, possibly remote code execution.


--[ Vendor response:

  * On September 24th 2008, the vendor stated :
    "With (the) mentioned version of avast4workstation 1.0.8_2, indeed,
    this bug existed. It was a stack-overflow, caused by cycling over
    intertwined directories on corrupted ISO files. All versions built
    since 22.1.2008 have this fixed. Thanks for your report."


--[ Credits:

    This vulnerability was discovered by Security Researcher
    Jonathan Brossard from iViZ Techno Solutions Pvt. Ltd.


--[ Disclosure timeline:

  * First private disclosure to vendor on September 18th 2008.
  * First vendor reply on September 19th 2008.
  * On September 23th 2008, the vendor claims to have fixed the problem :
    "my colleague identified the problem few minutes ago as a bug which was
    fixed 22. Jan 2008."
  * On October 15th 2008, the vulnerable trial version link hasn't been updated:
    http://download664.avast.com/files/linux/avast4workstation_1.0.8-2_i386.deb


--[ Reference:

    http://www.ivizsecurity.com/security-advisory.html

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