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)
EPSS: 0.002 (7.5th percentile) — read the EPSS interpretation.
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.
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
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
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.