Detections
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Emerson DeltaV Distributed Control System Use of a Broken or Risky Cryptographic Algorithm (CVE-2022-29965)
medium Tenable OT Security Plugin ID 500698
Synopsis
The remote OT asset is affected by a vulnerability.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.- 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. (CVE-2022-29965)
This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.Emerson has provided the following mitigations or workarounds:
Emerson has corrected CVE-2022-29965 in all currently supported versions of DeltaV. For additional mitigations and preventative measures, please see the Emerson Guardian Support Portal (login required).
Emerson has mitigated CVE-2022-29962, CVE-2022-29963, and CVE-2022-29964 in all currently supported versions of DeltaV.
Please see the Emerson Guardian Support Portal (login required) for more information.
Emerson corrected the Firmware image verification vulnerability in Version 14.3 and mitigated it in all other versions.
Please see the Emerson Guardian Support Portal (login required) for more information.
See Also
Plugin Details
Severity: Medium
ID: 500698
Version: 1.8
Type: remote
Family: Tenable.ot
Published: 8/4/2022
Updated: 9/4/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N
CVSS Score Source: CVE-2022-29965
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:emerson:deltav_distributed_control_system_sq_controller_firmware
Required KB Items: Tenable.ot/Emerson
Exploit Ease: No known exploits are available
Patch Publication Date: 7/26/2022
Vulnerability Publication Date: 7/26/2022
Reference Information
CVE: CVE-2022-29965
CWE: 327
ICSA: 22-181-03