CVE-2022-29965 Weak cryptography in n/a
Attackers can predict maintenance passwords due to weak entropy, gaining privileged access to Emerson DeltaV DCS controllers via Telnet.
- 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-2022-29965?
CVE-2022-29965 is a medium-severity vulnerability in n/a, published on 26 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Emerson DeltaV Distributed Control System (DCS) controllers and IO cards through 2022-04-29 misuse passwords. Access to privileged operations on the maintenance port TELNET interface (23/TCP) on M-series and SIS (CSLS/LSNB/LSNG) nodes is controlled by means of utility passwords. These passwords are generated using a deterministic, insecure algorithm using a single seed value composed of a day/hour/minute timestamp with less than 16 bits of entropy. The seed value is fed through a lookup table and a series of permutation operations resulting in three different four-character passwords corresponding to different privilege levels. An attacker can easily reconstruct these passwords and thus gain access to privileged maintenance operations. NOTE: this is different from CVE-2014-2350.
Weakness: CWE-327
Which versions are affected by CVE-2022-29965?
It affects 25 products.
Products include Emerson Deltav Distributed Control System, Emerson Deltav Distributed Control System Sq Controller Firmware, Emerson Deltav Distributed Control System Sx Controller Firmware, Emerson Se4002s1t2b6 High Side 40-Pin Mass I\/O Terminal Block Firmware, Emerson Se4003s2b4 16-Pin Mass I\/O Terminal Block Firmware, Emerson Se4003s2b524-Pin Mass I\/O Terminal Block Firmware and 19 more.
How do I fix CVE-2022-29965?
No fix has been published for CVE-2022-29965 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-29965 being exploited?
There is no known exploitation of CVE-2022-29965 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2cw2-wqm2-wwp4.