SB2023121235 - Use of default credentials in Unitronics Vision Series PLCs and HMIs
Published: December 12, 2023
Security Bulletin ID
SB2023121235
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of default credentials (CVE-ID: CVE-2023-6448)
CWE-ID: CWE-1392 - Use of Default Credentials
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to Unitronics Vision Series PLCs and HMIs use default administrative passwords. A remote attacker with network access to a PLC or HMI can gain administrative control over the system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.
References
- https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems
- https://www.waterisac.org/portal/tlpclear-cisa-releases-alert-exploitation-unitronics-plcs-used-water-and-wastewater-systems
- https://www.waterisac.org/portal/tlpclear-water-utility-control-system-cyber-incident-advisory-icsscada-incident-municipal