CVE-2017-14467 Missing authorization in Allen Bradley
Unauthenticated attackers can read or modify ladder logic and settings on Allen Bradley Micrologix PLCs when the keyswitch is in REMOTE mode.
- 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-2017-14467?
CVE-2017-14467 is a critical missing authorization 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 access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a read or write operation resulting in disclosure of sensitive information, modification of settings, or modification of ladder logic. An attacker can send unauthenticated packets to trigger this vulnerability. Required Keyswitch State: REMOTE Description: Live rung edits are able to be made by an unauthenticated user allowing for addition, deletion, or modification of existing ladder logic. Additionally, faults and cpu state modification can be triggered if specific ladder logic is used.
Which versions are affected by CVE-2017-14467?
It affects 1 product.
Products include Rockwellautomation Micrologix 1400 B Firmware.
How do I fix CVE-2017-14467?
No fix has been published for CVE-2017-14467 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2017-14467 being exploited?
There is no known exploitation of CVE-2017-14467 in the wild and no public exploit code.
Other vulnerabilities in Talos Allen Bradley
Sources
Also known as GHSA-x2x7-q72v-2q6q.