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Simple Machines Forum < 1.1.3 PHPSESSIONID Cookie Session Hijacking

Medium

Synopsis

The remote host is vulnerable to a predictable ID flaw that allows hijacking of user accounts.

Description

The remote host is running the Simple Machines Forum (SMF), a web forum. This version of SMF is vulnerable to a flaw in the way that it handles 'PHPSESSIONID' cookie data. Specifically, if an attacker can convince a user to browse a malicious URI with a predefined 'PHPSESSIONID', the attacker can impersonate the user and hijack their account. Successful exploitation would lead to the attacker gaining full access to the targeted account.

Solution

Upgrade to version 1.1.3 or higher.