CVE-2019-5082 Memory corruption in WAGO PFC100
Unauthenticated attackers can trigger a heap buffer overflow in the iocheckd service via crafted packets, potentially leading to remote code execution on WAGO PFC 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-2019-5082?
CVE-2019-5082 is a critical memory corruption vulnerability in WAGO PFC100, published on 8 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable heap buffer overflow vulnerability exists in the iocheckd service I/O-Check functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a heap buffer overflow, potentially resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.
Weakness: CWE-787
Which versions are affected by CVE-2019-5082?
It affects 2 products.
Products include Wago Pfc100 Firmware, Wago Pfc200 Firmware.
How do I fix CVE-2019-5082?
No fix has been published for CVE-2019-5082 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-2019-5082 being exploited?
There is no known exploitation of CVE-2019-5082 in the wild and no public exploit code.
Other vulnerabilities in WAGO PFC100
Sources
Also known as GHSA-hc2w-f6x6-qrc8.