[NT] AVIRA Antivirus ACE Archive Handling Buffer Overflow

From: SecuriTeam (support_at_securiteam.com)
Date: 09/15/05

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Date: 15 Sep 2005 11:46:37 +0200

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      AVIRA Antivirus ACE Archive Handling Buffer Overflow
    ------------------------------------------------------------------------

    SUMMARY

    Secunia Research has discovered a vulnerability in AVIRA Desktop for
    Windows antivirus, which can be exploited by malicious people to
    compromise a vulnerable system.

    DETAILS

    Vulnerable Systems:
     * AVIRA Desktop for Windows version 1.00.00.68 with AVPACK32.DLL version
    6.31.0.3

    Immune Systems:
     * AVIRA Desktop for Windows version 1.00.00.68 with AVPACK32.DLL version
    6.31.1.7

    The vulnerability is caused due to a boundary error when reading the
    filename of a compressed file from an ACE archive. This can be exploited
    to cause a stack-based buffer overflow when an ACE archive containing a
    compressed file with an overly long filename is scanned.

    Successful exploitation allows arbitrary code execution, but requires that
    archive scanning is enabled.

    Vendor response:
    The vendor has issue the following statement:
    <http://www.avira.com/en/news/avira_desktop_for_windows_patched_against_vulnerability.html> AVIRA Desktop for Windows patched against vulnerability

    Disclosure Timeline:
    05/09/2005 - Initial vendor notification
    05/09/2005 - Initial vendor reply
    06/09/2005 - Vendor provides updated version for testing
    14/09/2005 - Public disclosure

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:vuln@secunia.com> Secunia
    Research.
    The original article can be found at:
    <http://secunia.com/secunia_research/2005-43/advisory/>
    http://secunia.com/secunia_research/2005-43/advisory/

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