phpBB Referer HTTP Header cross-site scripting

phpbb-referer-header-http-xss (24497) The risk level is classified as MediumMedium Risk

Description:

phpBB is vulnerable to cross-site scripting and cross-site request forgery, caused by the session ID being included in the Referer HTTP Header. If remote avatars is enabled, which is not the default setting, a remote attacker could exploit this vulnerability using the Referer HTTP Header to execute script in the victim's Web browser within the security context of the hosting Web site, allowing the attacker to steal the victim's cookie-based authentication credentials.

Platforms Affected:

  • phpBB, phpBB 2.0.19

Remedy:

No remedy available as of May 2007.

Consequences:

Gain Access

References:

  • Full-Disclosure Mailing List, Fri Feb 03 2006 - 07:03:40 CST, phpBB 2.0.19 Cross Site Request Forgeries and XSS Admin at http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0028.html.
  • phpBB Web site, phpBB:: Creating Communities at http://www.phpbb.com/.
  • BID-16509: PHPBB HTTP Referer Information Disclosure Vulnerability
  • CVE-2006-0437: Cross-site scripting (XSS) vulnerability in admin_smilies.php in phpBB 2.0.19 allows remote attackers to inject arbitrary web script or HTML via Javascript events such as onmouseover in the (1) smile_url or (2) smile_emotion parameters, which bypasses a check for < and > characters.
  • CVE-2006-0438: Cross-site request forgery (CSRF) vulnerability in phpBB 2.0.19, when Link to off-site Avatar or bbcode (IMG) are enabled, allows remote attackers to perform unauthorized actions as a logged in user via a link or IMG tag in a user profile, as demonstrated using links to (1) admin/admin_users.php and (2) modcp.php.
  • FrSIRT/ADV-2006-0445: phpBB Cross Site Request Forgery and Cross Site Scripting Vulnerabilities
  • OSVDB ID: 22928: phpBB admin_smilies.php smile_url Variable XSS
  • SA18693: phpBB "Referer" Header Session ID Disclosure

Reported:

Feb 06, 2006

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