A joint Cybersecurity Advisory examines the exploitation of two critical vulnerabilities by nation-state threat actors.

AA23-250A: Multiple Nation-State Threat Actors Exploit CVE-2022-47966 and CVE-2022-42475

Fortinet has patched a zero day buffer overflow in FortiOS that could lead to remote code execution. There has been a report of active exploitation and organizations should patch urgently.

CVE-2022-42475: Fortinet Patches Zero Day in FortiOS SSL VPNs

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

A heap-based buffer overflow vulnerability [CWE-122]in FortiOS SSL- VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier  and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-22-398 advisory.

  - A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through     7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through     7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands     via specifically crafted requests. (CVE-2022-42475)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
505286	Siemens APE1808 Heap-based Buffer Overflow (CVE-2022-42475)	Tenable OT Security	Tenable.ot	Remote	critical
168637	Fortinet Fortigate Heap-based buffer overflow in sslvpnd (FG-IR-22-398)	Nessus	Firewalls	Local	critical

Detections

Analytics

CVE-2022-42475

critical

Tenable Plugins

critical

critical