phpBB CSRF Token Hijacking attack exposed

September 27, 2019

Overview :

phpBB version 3.2.7 allows the stealing of an Administration Control Panel session id by leveraging CSRF in the Remote Avatar feature. The CSRF Token Hijacking leads to stored XSS

Affected Product(s) :

phpBB version 3.2.7

Vulnerability Details :

CVE ID :	CVE-2019-13376
	When an admin accesses the Administrator Control Panel (ACP) in phpBB, a leftover session id GET parameter is present in the URL when he goes back to the Board index. Using a special remote avatar URL, an attacker can leak this session id value and perform a CSRF attack in order to create an XSS BBCode, allowing stored xss on the server.

Solution :

The vulnerability was fixed in version 3.2.8

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phpBB CSRF Token Hijacking attack exposed

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