CVE-2024-45399

Description

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In Indico prior to version 3.3.4, corresponding to Flask-Multipass prior to version 0.5.5, there is a Cross-Site-Scripting vulnerability during account creation when redirecting to the `next` URL. Exploitation requires initiating the account creation process with a maliciously crafted link, and then finalizing the signup process. Because of this, it can only target newly created (and thus unprivileged) Indico users. Indico 3.3.4 upgrades the dependency on Flask-Multipass to version 0.5.5, which fixes the issue. Those who build the Indico package themselves and cannot upgrade can update the `flask-multipass` dependency to `>=0.5.5` which fixes the vulnerability. Otherwise one could configure one's web server to disallow requests containing a query string with a `next` parameter that starts with `javascript:`.

How to fix CVE-2024-45399

To remediate CVE-2024-45399, upgrade the affected package to a fixed version below.

• —upgrade to 3.3.4 or later
• —upgrade to 0bdcf656d469e5f675cb56fd644d82fea3a97c2a or later

Is CVE-2024-45399 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 3.3.4
• from 0, < 0bdcf656d469e5f675cb56fd644d82fea3a97c2a | from 0, < 7dcb573837b9fd09d95f74d1baeae225b164cc8f | from 0, < 3.3.4

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2024-45399
• PATCHgithub.com/indico/indico
• WEBgithub.com/indico/flask-multipass/commit/0bdcf656d469e5f675cb56fd644d82fea3a97c2a
• WEBgithub.com/indico/indico/commit/7dcb573837b9fd09d95f74d1baeae225b164cc8f