Secunia Advisory SA14362

phpBB Avatar Functions Information Disclosure and Deletion
Secunia Advisory SA14362
Get alerted and manage the vulnerability life cycle
Release Date 2005-02-22
Last Update 2005-02-28
   
Popularity 58,340 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact Manipulation of data
Exposure of sensitive information
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
phpBB 2.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2005-0259 CVSS available in Customer Area
CVE-2005-0258 CVSS available in Customer Area
  

Description
AnthraX101 has reported two vulnerabilities in phpBB, which can be exploited by malicious users to disclose and delete sensitive information.

1) An input validation error in the upload handling of avatars can be exploited to disclose arbitrary files by simultaneously requesting to upload an avatar from both a local and a remote source, and specifying a local path in the "Upload Avatar from a URL:" field.

Successful exploitation requires that "Enable remote avatars" and "Enable avatar uploading" are enabled (not default settings).

2) Input validation errors in "usercp_avatar.php" and "usercp_register.php" can in combination be exploited to delete arbitrary files via directory traversal attacks.

Successful exploitation requires that "Enable gallery avatars" is enabled (not default setting).

Some issues disclosing the full path to certain scripts have also been reported.

The vulnerabilities have been reported in version 2.0.11. Prior versions may also be affected.

Solution
Update to version 2.0.12.
Further details available in Customer Area

Provided and/or discovered by
AnthraX101

Changelog
Further details available in Customer Area

Original Advisory
phpBB:
http://www.phpbb.com/phpBB/viewtopic.php?t=265423

iDEFENSE:
http://www.idefense.com/application/poi/display?id=204&type=vulnerabilities
http://www.idefense.com/application/poi/display?id=205&type=vulnerabilities

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area


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 Avatar Functions Information Disclosure and Deletion
 
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