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OpenBSD bgplg "cmd" Cross-Site Scripting Vulnerability
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Secunia Advisory:
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SA28726
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Release Date:
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2008-01-31
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Last Update:
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2008-02-07
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Popularity:
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5,103 views
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Critical:
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Less critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| OS: | OpenBSD 4.1
OpenBSD 4.2
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| CVE reference: | CVE-2007-6700
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Description:
Alexandr Polyakov and Anton Karpov have reported a vulnerability in OpenBSD bgplg, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input via the "cmd" parameter to the bgplg cgi-bin script is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
The vulnerability is reported in OpenBSD 4.1 and confirmed in OpenBSD 4.2.
Solution:
Filter malicious characters and character sequences using a web proxy. Fixed in CVS repository.
http://www.openbsd.org/cgi-bin/cvsweb...gplg.c.diff?r1=1.6&r2=1.7&f=h
Provided and/or discovered by:
Alexandr Polyakov and Anton Karpov, Digital Security Research Group
Changelog:
2008-02-01: Updated "Description" section due to the confirmation of the vulnerability in OpenBSD 4.2.
2008-02-07: Added CVE reference.
Original Advisory:
http://www.mail-archive.com/misc@openbsd.org/msg49057.html
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/bgplg/bgplg.c
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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