CVE-2019-5171 Command injection in WAGO PFC200
An attacker can execute arbitrary commands on WAGO PFC200 devices by sending a specially crafted packet to the iocheckd service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-5171?
CVE-2019-5171 is a high-severity command injection vulnerability in WAGO PFC200, published on 11 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send specially crafted packet at 0x1ea48 to the extracted hostname value from the xml file that is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled ip-address=<contents of ip node> using sprintf().
Weakness: CWE-78
Which versions are affected by CVE-2019-5171?
It affects 1 product.
Products include Wago Pfc200 Firmware.
How do I fix CVE-2019-5171?
No fix has been published for CVE-2019-5171 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-2019-5171 being exploited?
There is no known exploitation of CVE-2019-5171 in the wild and no public exploit code.
Other vulnerabilities in WAGO PFC200
Sources
Also known as GHSA-hvfr-v2x6-hcr4.