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TITLE:
phpGreetCards File Upload and Cross-Site Scripting Vulnerabilities

SECUNIA ADVISORY ID:
SA33304

VERIFY ADVISORY:
http://secunia.com/advisories/33304/

CRITICAL:
Highly critical

IMPACT:
Cross Site Scripting, System access

WHERE:
>From remote

SOFTWARE:
phpGreetCards 3.x
http://secunia.com/advisories/product/20868/

DESCRIPTION:
ahmadbady has discovered some vulnerabilities in phpGreetCards, which
can be exploited by malicious people to conduct cross-site scripting
attacks and compromise a vulnerable system.

1) The index.php script fails to validate the types of uploaded
images. This can be exploited to upload files with arbitrary
extensions (e.g. ".php") and execute arbitrary PHP code on the
server.

2) Input passed to the "category" parameter in index.php (when "mode"
is set to "select") 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 the context of an affected site.

These vulnerabilities are confirmed in version 3.7. Other versions
may also be affected.

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

PROVIDED AND/OR DISCOVERED BY:
ahmadbady

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/7561

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