ClipBucket v5 is vulnerable to password reset link manipulation

Vulnerability Description

ClipBucket v5 is an open source video sharing platform. In ClipBucket version 5.5.2, a change to network.class.php causes the application to dynamically build the server URL from the incoming HTTP Host header when the configuration base_url is not set. Because Host is a client-controlled header, an attacker can supply an arbitrary Host value. This allows an attacker to cause password-reset links (sent by forget.php) to be generated with the attacker’s domain. If a victim follows that link and enters their activation code on the attacker-controlled domain, the attacker can capture the code and use it to reset the victim’s password and take over the account. This issue has been patched in version 5.5.2#162.

References

• https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xhhf-mpqr-2cq5
• https://github.com/MacWarrior/clipbucket-v5/commit/1a93532e665217b5d329808ca78e37e59e9f8a9d