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UNARJ Directory Traversal Vulnerability
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Secunia Advisory:
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SA12788
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Release Date:
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2004-10-12
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Last Update:
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2004-11-18
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Popularity:
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6,210 views
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Critical:
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Less 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: | UNARJ 2.x
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| CVE reference: | CVE-2004-1027
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Description:
Doubles has reported a vulnerability in UNARJ, which potentially can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an input validation error when unpacking archives. This can be exploited via a directory traversal attack to overwrite files outside the directory, where the files are extracted to, if a user is tricked into extracting a malicious archive using UNARJ.
Successful exploitation requires that the "x" option is used to preserve paths.
The vulnerability has been confirmed in version 2.63 and has also been reported in version 2.65. Other versions may also be affected.
Solution:
The vendor reports that UNARJ is just a demonstration product and should not be used on production systems.
The vendor recommends users to use ARJ instead.
Provided and/or discovered by:
Doubles
Changelog:
2004-10-14: Updated "Solution" section.
2004-11-18: Added CVE reference.
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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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