CVE-2022-31481 Remote Code Execution via buffer overflow in firmware update process
Unauthenticated attackers can execute arbitrary code via buffer overflow in firmware updates, allowing full device compromise on HID Mercury controllers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-31481?
CVE-2022-31481 is a critical memory corruption vulnerability in HID Mercury EP4502, published on 6 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated attacker can send a specially crafted update file to the device that can overflow a buffer. This vulnerability impacts products based on HID Mercury Intelligent Controllers LP1501, LP1502, LP2500, LP4502, and EP4502 which contain firmware versions prior to 1.302 for the LP series and 1.296 for the EP series. The overflowed data can allow the attacker to manipulate the “normal” code execution to that of their choosing. An attacker with this level of access on the device can monitor all communications sent to and from this device, modify onboard relays, change configuration files, or cause the device to become unstable.
Weakness: CWE-120
Which versions are affected by CVE-2022-31481?
It affects 14 products.
Products include Carrier Lenels2 Lnl-4420 Firmware, Carrier Lenels2 Lnl-X2210 Firmware, Carrier Lenels2 Lnl-X2220 Firmware, Carrier Lenels2 Lnl-X3300 Firmware, Carrier Lenels2 Lnl-X4420 Firmware, Carrier Lenels2 S2-Lp-1501 Firmware and 8 more.
How do I fix CVE-2022-31481?
No fix has been published for CVE-2022-31481 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-31481 being exploited?
There is no known exploitation of CVE-2022-31481 in the wild and no public exploit code.
Other vulnerabilities in HID Mercury EP4502
- CVE-2022-31479 Remote Code Execution via command injection of the hostname
- CVE-2022-31483 Arbitrary file write via authenticated OSDP file upload
- CVE-2022-31486 Command injection via Advanced Networking route add functionality
- CVE-2022-31480 Unauthenticated Firmware Upload and Arbitrary Reboot
- CVE-2022-31482 Denial-of-Service via internal structure overflow
Sources
Also known as GHSA-4wgj-2885-vw22.