CVE-2024-7053

Name of the Vulnerable Software and Affected Versions open-webui/open-webui version 0.3.8

Description A vulnerability allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default SameSite=Lax and does not have the Secure flag enabled, allowing the session cookie to be sent over HTTP to a cross-origin domain. An attacker can exploit this by embedding a malicious markdown image in a chat, which, when viewed by an administrator, sends the admin's session cookie to the attacker's server. This can lead to a stealthy administrator account takeover, potentially resulting in remote code execution (RCE) due to the elevated privileges of administrator accounts.

Recommendations For open-webui/open-webui version 0.3.8, consider updating the session cookie settings to include the Secure flag and set SameSite to a more restrictive value, such as Strict, to prevent session fixation attacks. As a temporary workaround, restrict access to administrator accounts and avoid viewing potentially malicious content from untrusted sources.