CVE-2022-30316 Missing authorization in n/a
Attackers can push malicious firmware to Honeywell Experion PKS Safety Managers via serial interfaces due to missing firmware signing, enabling code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-30316?
CVE-2022-30316 is a medium-severity missing authorization vulnerability in n/a, published on 28 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Honeywell Experion PKS Safety Manager 5.02 has Insufficient Verification of Data Authenticity. According to FSCT-2022-0054, there is a Honeywell Experion PKS Safety Manager unauthenticated firmware update issue. The affected components are characterized as: Firmware update functionality. The potential impact is: Firmware manipulation. The Honeywell Experion PKS Safety Manager utilizes the DCOM-232/485 communication FTA serial interface and Enea POLO bootloader for firmware management purposes. An engineering workstation running the Safety Builder software communicates via serial or serial-over-ethernet link with the DCOM-232/485 interface. Firmware images were found to have no authentication (in the form of firmware signing) and only relied on insecure checksums for regular integrity checks. Firmware images are unsigned. An attacker with access to the serial interface (either through physical access, a compromised EWS or an exposed serial-to-ethernet gateway) can utilize hardcoded credentials (see FSCT-2022-0052) for the POLO bootloader to control the boot process and push malicious firmware images to the controller allowing for firmware manipulation, remote code execution and denial of service impacts. A mitigating factor is that in order for a firmware update to be initiated, the Safety Manager has to be rebooted which is typically done by means of physical controls on the Safety Manager itself. As such, an attacker would have to either lay dormant until a legitimate reboot occurs or possibly attempt to force a reboot through a secondary vulnerability.
Weakness: CWE-354
Which versions are affected by CVE-2022-30316?
It affects 1 product.
Products include Honeywell Safety Manager Firmware.
How do I fix CVE-2022-30316?
No fix has been published for CVE-2022-30316 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2022-30316 being exploited?
There is no known exploitation of CVE-2022-30316 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-xw3r-v728-68pj.