phpBB 3.0.12 CSRF ucp_pm_options

2015.02.01

Credit: nickvergessen

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2015-1432

CWE: CWE-352

CVSS Base Score: 6.8/10

Impact Subscore: 6.4/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

Correctly validate the ucp_pm_options form key.
phpBB/includes/ucp/ucp_pm_options.php View
@@ -29,7 +29,11 @@ function message_options($id, $mode, $global_privmsgs_rules, $global_rule_condit
// Change "full folder" setting - what to do if folder is full
if (isset($_POST['fullfolder']))
{
- check_form_key('ucp_pm_options', $config['form_token_lifetime'], $redirect_url);
+ if (!check_form_key('ucp_pm_options'))
+ {
+ trigger_error('FORM_INVALID');
+ }
+
$full_action = request_var('full_action', 0);
$set_folder_id = 0;

References:

https://tracker.phpbb.com/browse/PHPBB3-13526

https://github.com/phpbb/phpbb/pull/3311

See this note in RAW Version

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phpBB 3.0.12 CSRF ucp_pm_options

References:

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