phpBB avatar security bypass
| phpbb-avatar-security-bypass (26537) |  Medium Risk |
Description:
phpBB is vulnerable to security bypass. The 'Upload Avatar from a URL' function is flawed. If the default 'Enable avatar uploading' setting has been changed to 'enabled', a remote attacker could send a specially-crafted JPEG file containing malicious PHP script which could cause the server to make HTTP GET requests to arbitrary remote sites.
Platforms Affected:
- phpBB, phpBB 2.0.20
Remedy:
Upgrade to the latest version of phpBB (2.0.21 or later), available from the phpBB Web site. See References.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Fri May 12 2006 - 14:32:48 CDT , PHPBB 2.0.20 persistent issues with avatars at http://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html.
- BugTraq Mailing List, Sat May 13 2006 - 23:58:54 CDT , Re: PHPBB 2.0.20 persistent issues with avatars at http://archives.neohapsis.com/archives/bugtraq/2006-05/0280.html.
- phpBB Web site, phpBB:: Creating Communities at http://www.phpbb.com/.
- BID-17965: PHPBB Unauthorized HTTP Proxy Vulnerability
- CVE-2006-4450: usercp_avatar.php in PHPBB 2.0.20, when avatar uploading is enabled, allows remote attackers to use the server as a web proxy by submitting a URL to the avatarurl parameter, which is then used in an HTTP GET request.
- SA20093: phpBB "Upload Avatar from a URL" Weakness and PHP Code Execution
Reported:
May 13, 2006
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