Vulnerability in Emerson Deltav Distributed Control System
CVE-2022-29965
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Emerson Deltav Distributed Control System
- Emerson Deltav Distributed Control System Sq Controller
- Emerson Deltav Distributed Control System Sq Controller Firmware
- Emerson Deltav Distributed Control System Sx Controller
- Emerson Deltav Distributed Control System Sx Controller Firmware
- Emerson Se4002s1t2b6 High Side 40-Pin Mass I\/o Terminal Block
- Emerson Se4002s1t2b6 High Side 40-Pin Mass I\/o Terminal Block Firmware
- Emerson Se4003s2b4 16-Pin Mass I\/o Terminal Block
- Emerson Se4003s2b4 16-Pin Mass I\/o Terminal Block Firmware
- Emerson Se4003s2b524-Pin Mass I\/o Terminal Block
Weakness classification (CWE)
References
- www.forescout.com/blog/ (Third Party Advisory)
- www.cisa.gov/uscert/ics/advisories/icsa-22-181-03 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-29965?
- CVE-2022-29965 is a medium-severity vulnerability in Emerson Deltav Distributed Control System, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.5/10. Published 2022-07-26.
- How severe is CVE-2022-29965?
- Medium severity. CVSS v3 base score is 5.5 out of 10.