CVE-2022-3480
A remote, unauthenticated attacker could cause a denial-of-service of PHOENIX CONTACT FL MGUARD and TC MGUARD devices below version 8.9.0 by sending a larger number of unauthenticated HTTPS connections originating from different source IP’s.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A remote, unauthenticated attacker could cause a denial-of-service of PHOENIX CONTACT FL MGUARD and TC MGUARD devices below version 8.9.0 by sending a larger number of unauthenticated HTTPS connections originating from different source IP’s. Configuring firewall limits for incoming connections cannot prevent the issue.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.88% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- phoenixcontact/fl mguard centerport firmware · phoenixcontact/fl mguard centerport vpn-1000 firmware · phoenixcontact/fl mguard core tx firmware · phoenixcontact/fl mguard core tx vpn firmware · phoenixcontact/fl mguard delta tx\/tx firmware · phoenixcontact/fl mguard delta tx\/tx vpn firmware · phoenixcontact/fl mguard gt\/gt firmware · phoenixcontact/fl mguard gt\/gt vpn firmware · phoenixcontact/fl mguard pci4000 firmware · phoenixcontact/fl mguard pci4000 vpn firmware · phoenixcontact/fl mguard pcie4000 firmware · phoenixcontact/fl mguard pcie4000 vpn firmware · phoenixcontact/fl mguard rs2000 tx\/tx-b firmware · phoenixcontact/fl mguard rs2000 tx\/tx vpn firmware · phoenixcontact/fl mguard rs2005 tx vpn firmware · phoenixcontact/fl mguard rs4000 tx\/tx firmware · phoenixcontact/fl mguard rs4000 tx\/tx-m firmware · phoenixcontact/fl mguard rs4000 tx\/tx-p firmware · phoenixcontact/fl mguard rs4000 tx\/tx vpn firmware · phoenixcontact/fl mguard rs4004 tx\/dtx firmware · +11 more
- Source
- info@cert.vde.com
References
- https://cert.vde.com/en/advisories/VDE-2022-051/Mitigation, Third Party Advisory
- https://cert.vde.com/en/advisories/VDE-2022-051/Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.