Tc Mguard Rs4000 4G Vzw Vpn Firmware
CVE-2022-3480
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (cert) · only source for this CVE.
CVSS VectorVendor: cert
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. 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. Affected products include: 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. Version information: version 8.9.0.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.
On Phoenix Contact mGuard Devices versions before 8.8.3 LAN ports get functional after reboot even if they are disabled
An low privileged remote attacker can execute OS commands with root privileges due to improper neutralization of special
A low privileged remote attacker with write permissions can reconfigure the SNMP service due to improper input validatio
A low privileged remote attacker can read and write files as root due to improper neutralization of special elements in
A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralizati
A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralizati
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet forwarding
A low privileged remote attacker can perform configuration changes of the ospf service through OSPF_INTERFACE.SIMPLE_KEY
A low privileged remote attacker can get access to CSRF tokens of higher privileged users which can be abused to mount C
Same technique Denial Of Service
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External POC / Exploit Code
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