CVE-2023-6631

Summary

PowerSYSTEM Center versions 2020 Update 16 and prior contain a vulnerability that may allow an authorized local user to insert arbitrary code into the unquoted service path and escalate privileges.

Affected Software

Weaknesses

• CWE-428: CWE-428

Workarounds

Additionally, Subnet Solutions recommends users apply Application Allowlisting on PowerSYSTEM Center Device Communication Server (DCS) hosts to ensure only trusted executables are able to be run.

If unable to apply PowerSYSTEM Center 2020 Update 17, Subnet Solutions recommends users mitigate risk by logging in to the DCS as administrator, opening the Registry Editor, navigating to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services, locating all pscagent.* entries, and modifying the ImagePath key by enclosing it within double quotes ("). Restart computer when complete.

ADP Enrichment

CVE Program Container

Additional References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-353-01
• https://subnet.com/contact/

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-353-01
• https://subnet.com/contact/

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