CVE-2022-31479 Remote Code Execution via command injection of the hostname
Unauthenticated attackers can execute arbitrary shell commands via hostname injection on HID Mercury controllers, gaining remote access and persistence.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-31479?
CVE-2022-31479 is a critical command injection vulnerability in HID Mercury EP4502, published on 6 Jun 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An unauthenticated attacker can update the hostname with a specially crafted name that will allow for shell commands to be executed during the core collection process. 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. 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. The injected commands only get executed during start up or when unsafe calls regarding the hostname are used. This allows the attacker to gain remote access to the device and can make their persistence permanent by modifying the filesystem.
Which versions are affected by CVE-2022-31479?
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-2022-31479?
No fix has been published for CVE-2022-31479 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2022-31479 being exploited?
There is no known exploitation of CVE-2022-31479 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-2022-31483 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-2pg7-j7hc-h682.