CVE-2020-16100

Severity: High (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Components affected: Gallagher Command Centre Server
Version of Command Centre affected:Versions of v8.20 prior to v8.20.1166(MR3), versions of 8.10 prior to v8.10.1211(MR5),  versions of 8.00 prior to v8.00.1228(MR6), all versions of 7.90 and earlier.
Reported by: Gallagher
Active exploitation of vulnerability*: No
Description of vulnerability: It is possible for an unauthenticated remote DCOM websocket connection to crash the Command Centre services DCOM websocket thread due to improper shutdown of closed websocket connections, preventing it from accepting future DCOM websocket (Configuration Client) connections. Affected versions are v8.20 prior to v8.20.1166(MR3), v8.10 prior to v8.10.1211(MR5),  v8.00 prior to v8.00.1228(MR6), all versions of 7.90 and earlier.
Mitigation: Configure the firewall on the Command Centre server machine to restrict access to the DCOM websocket port (8905), as recommended in the Hardening Guide.

Maintenance releases are now available for:

• v8.20 - v8.20.1166(MR3)
• v8.10 - v8.10.1211(MR5)
• v8.00 - v8.00.1228(MR6)

Important notes:

• These maintenance upgrades require the Command Centre server to be upgraded.

*This indicates whether Gallagher are aware of this being maliciously exploited against customer sites.