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ExtractNow unacev2.dll Buffer Overflow Vulnerability
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Secunia Advisory:
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SA19581
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Release Date:
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2006-05-02
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Last Update:
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2006-05-05
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Popularity:
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4,098 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | ExtractNow 3.x
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2005-2856
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Description:
Secunia Research has discovered a vulnerability in ExtractNow, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error in UNACEV2.DLL when extracting an ACE archive containing a file with an overly long filename. This can be exploited to cause a stack-based buffer overflow when a user extracts a specially crafted ACE archive.
The vulnerability is related to:
SA16479
The vulnerability has been confirmed in version 3.60. Other versions may also be affected.
Solution:
No fix is available for version 3.x. However, the rewritten version 4.x is not affected. Users can therefore upgrade to version 4.15 or later.
Provided and/or discovered by:
Secunia Research
Changelog:
2006-05-05: Added CVE reference.
Other References:
SA16479:
http://secunia.com/advisories/16479/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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