This article is a part of our Vulnerability Database (back to index)
Cross-Site Request Forgery occurrences in Piwigo
admin.php?page=account_billing in Piwigo 2.9.5 has XSS via the vat_number, billing_name, company, or billing_address parameter. This is exploitable via CSRF. (2019-09-13, CVE-2019-13364)
admin.php?page=notification_by_mail in Piwigo 2.9.5 has XSS via the nbm_send_html_mail, nbm_send_mail_as, nbm_send_detailed_content, nbm_complementary_mail_content, nbm_send_recent_post_dates, or param_submit parameter. This is exploitable via CSRF. (2019-09-13, CVE-2019-13363)
The management panel in Piwigo 2.9.3 has stored XSS via the name parameter in a /admin.php?page=photo-${photo_number} request. CSRF exploitation, related to CVE-2017-10681, may be possible. (2018-03-06, CVE-2018-7724)
Why Cross-Site Request Forgery can be dangerous
The absence of Anti-CSRF tokens may lead to a Cross-Site Request Forgery attack that can result in executing a specific application action as another logged in user, e.g. steal their account by changing their email and password or silently adding a new admin user account when executed from the administrator account.
The attacker may copy one of your web application forms, e.g. email/password change form.
The webpage will contain a form with the exact set of fields as the original application but with input values already provided and the submit button replaced with a Javascript code causing auto-submission. When the page is accessed the form will be immediately submitted and page contents replaced with a valid content or a redirect to your original application.
One of your application users who is already logged in can be then tricked to navigate to such malicious page e.g. by clicking a link in a phishing email, and the pre-populated form content will be submitted to your application like it would be submitted by your user.