CVE-2017-12093 Denial of service in Allen Bradley
An attacker can disconnect legitimate PLC connections by flooding the session resource pool with crafted packets, impacting industrial control operations.
- 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-2017-12093?
CVE-2017-12093 is a medium-severity denial of service vulnerability in Talos Allen Bradley, published on 5 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.
Weakness: CWE-400
Which versions are affected by CVE-2017-12093?
It affects 1 product.
Products include Rockwellautomation Micrologix 1400 B Firmware.
How do I fix CVE-2017-12093?
No fix has been published for CVE-2017-12093 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-2017-12093 being exploited?
There is no known exploitation of CVE-2017-12093 in the wild and no public exploit code.
Other vulnerabilities in Talos Allen Bradley
Sources
Also known as GHSA-6xvm-9875-gvqp.