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Sarg User-Agent Processing Multiple Vulnerabilities
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Secunia Advisory:
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SA28668
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Release Date:
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2008-03-03
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Last Update:
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2008-05-12
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Popularity:
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4,295 views
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Critical:
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Highly critical
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Impact:
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Cross Site Scripting
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: | Sarg 2.x
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2008-1167
CVE-2008-1168
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Description:
L4teral has discovered some vulnerabilities in Sarg, which can be exploited by malicious people to conduct script insertion attacks or to compromise a vulnerable system.
1) A boundary error exists within the "useragent()" function in useragent.c. This can be exploited to cause a stack-based buffer overflow via an overly long User-Agent header sent to a Squid proxy server.
Successful exploitation allows execution of arbitrary code.
2) Input passed via the User-Agent header to a Squid proxy server is not properly sanitised before being used to generate HTML reports. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious logs are viewed.
Successful exploitation of the vulnerabilities requires that processing support for Squid User-Agent logs is enabled.
The vulnerabilities are confirmed in version 2.2.3.1. Other versions may also be affected.
Solution:
Update to version 2.2.5.
Provided and/or discovered by:
L4teral
Changelog:
2008-03-11: Added CVE reference.
2008-05-12: Updated "Solution" section. Added additional link.
Original Advisory:
Sarg:
http://sourceforge.net/project/shownotes.php?release_id=581212
http://sourceforge.net/project/shownotes.php?release_id=581509
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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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