CVE-2022-31482 Denial-of-Service via internal structure overflow
Unauthenticated attackers can cause denial of service on HID Mercury controllers via buffer overflow in HTTP requests.
- 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-2022-31482?
CVE-2022-31482 is a high-severity 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 unauthenticated HTTP request 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 1.29. The overflowed data leads to segmentation fault and ultimately a denial-of-service condition, causing the device to reboot. The impact of this vulnerability is that an unauthenticated attacker could leverage this flaw to cause the target device to become unresponsive. An attacker could automate this attack to achieve persistent DoS, effectively rendering the target controller useless.
Weakness: CWE-120
Which versions are affected by CVE-2022-31482?
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-2022-31482?
No fix has been published for CVE-2022-31482 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-2022-31482 being exploited?
There is no known exploitation of CVE-2022-31482 in the wild and no public exploit code.
Other vulnerabilities in HID Mercury EP4502
- CVE-2022-31481 Remote Code Execution via buffer overflow in firmware update process
- 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
Sources
Also known as GHSA-4qf2-7m52-qfp8.