Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date.
In a new advisory, Fortinet said it had identified a fresh attack path being used to abuse SAML-based SSO in FortiOS, even on systems that had already applied the vendor’s earlier fix. The disclosure follows reports earlier this week that FortiGate firewalls were quietly reconfigured via compromised SSO accounts, with attackers altering firewall settings, creating backdoor admin users, and exfiltrating configuration files.
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Source: The Register
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