From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Dec 15 2008 - 14:24:04 CST

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TITLE:
chuggnutt.com "HTML to Plain Text Conversion" PHP Class Code
Execution

SECUNIA ADVISORY ID:
SA33145

VERIFY ADVISORY:
http://secunia.com/advisories/33145/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
chuggnutt.com "HTML to Plain Text Conversion" PHP Class 1.x
http://secunia.com/advisories/product/20747/

DESCRIPTION:
A vulnerability has been discovered in the chuggnutt.com "HTML to
Plain Text Conversion" PHP class, which can be exploited by malicious
people to compromise a vulnerable system.

The vulnerability is caused due to the class using insecure regular
expressions to filter HTML input. This can be exploited to inject and
execute arbitrary PHP code by e.g. passing specially crafted data to
an application using this class.

The vulnerability is confirmed in version 1.0. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure that secure regular expressions are
used.

PROVIDED AND/OR DISCOVERED BY:
Reported in a RoundCube Webmail bug by RealMurphy.

ORIGINAL ADVISORY:
http://trac.roundcube.net/ticket/1485618

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