CVE-2020-24034

Related Files

Sagemcom F@ST 5280 Privilege Escalation

Posted Sep 1, 2020

Authored by Ryan Delaney

Sagemcom F@ST 5280 routers using firmware version 1.150.61, and possibly others, have an insecure deserialization vulnerability that allows any authenticated user to perform a privilege escalation to any other user. By making a request with valid sess_id, nonce, and ha1 values inside of the serialized session cookie, an attacker may alter the user value inside of this cookie, and assume the role and permissions of the user specified. By assuming the role of the user internal, which is inaccessible to end users by default, the attacker gains the permissions of the internal account, which includes the ability to flash custom firmware to the router, allowing the attacker to achieve a complete compromise.

tags | exploit

advisories | CVE-2020-24034

SHA-256 | b749b45a358358330f8fd5f3cec1a2eb0a30872b9d8f5cd95aaf47010c1890ef

Download | Favorite | View