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XnView / NView Insecure RPATH Vulnerability
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Secunia Advisory:
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SA18235
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Release Date:
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2005-12-29
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Last Update:
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2006-01-13
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Unpatched
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| Software: | NView 4.x
XnView 1.x
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| | CVE reference: | CVE-2005-4595 (Secunia mirror)
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This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released! |
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Description:
nelchael has discovered a vulnerability in XnView / NView, which can be exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to an insecure RPATH being configured in the distributed "nview" and "xnview" binaries. This causes the affected binaries to look for shared libraries within the current working directory first. This can be exploited to execute arbitrary code with privileges of the user running the affected binaries by causing the binaries to load a malicious shared library (e.g. libXcursor.so) from the current directory.
Successful exploitation requires that the user runs the affected binaries from a directory that other users can write to.
The vulnerability has been confirmed in XnView version 1.70 and NView version 4.51. Other versions may also be affected.
Solution:
Do not run the affected binaries when in a working directory that is writable by other users.
Provided and/or discovered by:
nelchael
Changelog:
2006-01-13: Added CVE reference.
Original Advisory:
Gentoo Bugzilla:
http://bugs.gentoo.org/show_bug.cgi?id=117063
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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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