Vulnerability · Published Dec 17, 2020 · Assigned by CERTVDE
CVE-2020-12521Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: A specially crafted LLDP packet may lead to a high system load in the PROFINET stack.
Medium 6.5
In plain English
A medium-severity improper input validation in AXC F 1152 (1151412) from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 60.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | AXC F 1152 (1151412) | unspecified – before 2021.0 LTS |
| Phoenix Contact | AXC F 2152 (2404267) | unspecified – before 2021.0 LTS |
| Phoenix Contact | AXC F 3152 (1069208) | unspecified – before 2021.0 LTS |
| Phoenix Contact | RFC 4072S (1051328 | unspecified – before 2021.0 LTS |
| Phoenix Contact | AXC F 2152 Starterkit (1046568) | unspecified – before 2021.0 LTS |
| Phoenix Contact | PLCnext Technology Starterkit (1188165) | unspecified – before 2021.0 LTS |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://cert.vde.com/en-us/advisories/vde-2020-049 x_refsource_CONFIRM