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Insecure Library Loading
Highly critical

phpBB "highlight" PHP Code Execution and Script Insertion

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Release Date:  2005-06-28    Last Update:  2005-07-29    Views:  29,963

Secunia Advisory SA15845

Where:

From remote

Impact:

Cross Site Scripting, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

No CVE references.

Description


Two vulnerabilities have been reported in phpBB, which can be exploited by malicious people to conduct script insertion attacks and compromise a vulnerable system.

1) Input passed to the "highlight" parameter in "viewtopic.php" is not properly sanitised before being used in a "preg_replace()" call with the "e" modifier. This can be exploited to inject arbitrary PHP code.

NOTE: This is related to an older vulnerability incorrectly fixed in version 2.0.11.

The vulnerability has been reported in version 2.0.15 and prior.

2) An input validation error in the avatar section can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site in the Microsoft Internet Explorer browser by uploading a specially crafted JavaScript file with an image file extension.

The vulnerability has been reported in version 2.0.15. Prior versions may also be affected.


Solution:
Update to version 2.0.16.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Ron van Daal
2) The vendor credits Xpert

Original Advisory:
1) http://www.phpbb.com/phpBB/viewtopic.php?t=302011
2) http://www.phpbb.com/security/final_reports.php?p=16

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: phpBB "highlight" PHP Code Execution and Script Insertion

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