TITLE:
Simple PHP Blog Cross-Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA17404

VERIFY ADVISORY:
http://secunia.com/advisories/17404/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Simple PHP Blog 0.x
http://secunia.com/product/5342/

DESCRIPTION:
Nenad Jovanovic has discovered some vulnerabilities in Simple PHP
Blog, which can be exploited by malicious people to conduct
cross-site scripting attacks.

Input passed to the "entry" parameter in "preview_cgi.php" and
"preview_static_cgi.php", the "blog_subject" and "blog_text"
parameters in "preview_cgi.php", the "blog_subject", "blog_text", and
"file_name" parameters in "preview_static_cgi.php", and the
"scheme_name" and "bg_color" parameters in "colors_cgi.php" isn't
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 vulnerabilities have been confirmed in version 0.4.5. Other
versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

The vulnerabilities will reportedly be fixed in an upcoming version.

PROVIDED AND/OR DISCOVERED BY:
Nenad Jovanovic, Secure Systems Lab, Technical University of Vienna

ORIGINAL ADVISORY:
http://www.seclab.tuwien.ac.at/advisories/TUVSA-0511-001.txt

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