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TITLE:
Simple Machine Forum Avatar Information Disclosure Weakness

SECUNIA ADVISORY ID:
SA16646

VERIFY ADVISORY:
http://secunia.com/advisories/16646/

CRITICAL:
Not critical

IMPACT:
Exposure of system information

WHERE:
>From remote

SOFTWARE:
Simple Machines 1.x
http://secunia.com/product/5285/

DESCRIPTION:
rgod has discovered a weakness in Simple Machine Forum, which can be
exploited by malicious people to disclose certain system
information.

The weakness is caused to the application allowing users to use
externals files as avatars. This can be exploited to gather
information (e.g. IP addresses, browser types) of other users, who
view a forum post containing an external avatar image.

The weakness has been confirmed in version 1.0.5. Other versions may
also be affected.

SOLUTION:
Edit the source code to disallow the use of external files as avatar.

PROVIDED AND/OR DISCOVERED BY:
rgod

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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