CVE-2019-9590 Denial of service in n/a
Remote attackers can cause persistent denial of service on TENGCONTROL T-920 PLC devices by sending specific Modbus 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-2019-9590?
CVE-2019-9590 is a high-severity denial of service vulnerability in n/a, published on 6 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered on TENGCONTROL T-920 PLC v5.5 devices. It allows remote attackers to cause a denial of service (persistent failure mode) by sending a series of \x19\xb2\x00\x00\x00\x06\x43\x01\x00\xac\xff\x00 (aka UID 0x43) requests to TCP port 502.
Which versions are affected by CVE-2019-9590?
It affects 1 product.
Products include Tengcon T-920 Plc Firmware.
How do I fix CVE-2019-9590?
No fix has been published for CVE-2019-9590 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-9590 being exploited?
There is no known exploitation of CVE-2019-9590 in the wild and no public exploit code.
Sources
Also known as GHSA-fxf8-rfwg-hhhv.