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TITLE:
Blojsom Multiple Script Insertion Vulnerabilities

SECUNIA ADVISORY ID:
SA21935

VERIFY ADVISORY:
http://secunia.com/advisories/21935/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Blojsom 2.x
http://secunia.com/product/11962/

DESCRIPTION:
Avinash Shenoi has discovered some vulnerabilities in Blojsom, which
can be exploited by malicious users to conduct script insertion
attacks.

Input passed to the "blog-category-description" and
"blog-category-name" form-field parameters when adding a category,
and to the "blog-entry-title" and "technorati-tagsi" form field
parameters when adding a new entry is not properly sanitised before
being used. This can be exploited to insert arbitrary HTML and script
code, which is executed in an administrative user's browser session in
context of an affected site when the malicious data is viewed.

Successful exploitation requires privileges to add categories and new
blog entries.

The vulnerabilities have been confirmed in version 2.31. Other
versions may also be affected.

SOLUTION:
Grant only trusted users access to affected applications.

PROVIDED AND/OR DISCOVERED BY:
Avinash Shenoi

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