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Novell iChain Authentication Buffer Overflow Vulnerability
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Secunia Advisory:
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SA8973
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Release Date:
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2003-06-09
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Popularity:
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5,789 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Novell iChain 2.x
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Description:
A vulnerability has been identified in Novell iChain, which can be exploited by malicious people to cause a DoS (Denial of Service) on a vulnerable system and potentially compromise it.
The vulnerablity is caused due to a boundary error in the authentication code handling usernames. The problem is that the size of usernames is only restricted by a "SIZE" parameter in a HTML form, which can be easily bypassed.
A malicious, non-authenticated person can exploit this to cause a buffer overflow by supplying an overly long username (about 230 bytes long). This will cause the iChain Server to stop responding.
Reportedly, the vulnerability could potentially be exploited to execute arbitrary code on a vulnerable system, though this has not been proven.
Solution:
Apply patches.
iChain 2.2 Field Patch 1a:
http://support.novell.com/servlet/filedownload/sec/ftf/ic22fp1a.exe
iChain 2.1 Field Patch 3:
http://support.novell.com/servlet/filedownload/sec/ftf/ic21fp3.exe
NOTE: The patches issued by Novell also fixes multiple other issues, where some are security related (see: "Original Advisory" section for more information).
Provided and/or discovered by:
Axel Dunkel
Original Advisory:
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2966205.htm
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2966207.htm
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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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