Secunia Security Advisory - Xianur0 has discovered a vulnerability in Simple Machines Forum, which can be exploited by malicious people to conduct cross-site scripting attacks.
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TITLE:
Simple Machines Forum "packages.xml" Cross-Site Scripting
SECUNIA ADVISORY ID:
SA33670
VERIFY ADVISORY:
http://secunia.com/advisories/33670/
CRITICAL:
Less critical
IMPACT:
Cross Site Scripting
WHERE:
>From remote
SOFTWARE:
Simple Machines Forum 1.x
http://secunia.com/advisories/product/5285/
DESCRIPTION:
Xianur0 has discovered a vulnerability in Simple Machines Forum,
which can be exploited by malicious people to conduct cross-site
scripting attacks.
Input read from the "text" and "description" elements in a
"packages.xml" file (e.g. when "action" is set to "packageget", "sa"
is set to "browse", and "absolute" is set to the web address serving
the malicious "packages.xml" file) is not properly sanitised before
being returned to the user. This can be exploited to execute
arbitrary HTML and script code in an administrative user's browser
session in the context of an affected site.
This vulnerability is confirmed in version 1.1.7. Other versions may
also be affected.
SOLUTION:
Edit the source code to ensure that input is properly sanitised.
PROVIDED AND/OR DISCOVERED BY:
Xianur0
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