CVE-2020-12521— 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.
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I. Basic Information for CVE-2020-12521
Vulnerability Information
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Vulnerability Title
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.
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Phoenix Contact PLCnext Control Devices 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Phoenix Contact PLCnext Control Devices是德国Phoenix Contact公司的一款应用于工业环境可编程逻辑控制器。 Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS 存在安全漏洞，该漏洞源于一个特别设计的LLDP包可能会导致PROFINET堆栈中的高系统负载。攻击者可利用该漏洞可能导致系统服务失败或完全重新引导。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Phoenix Contact | AXC F 1152 (1151412) | unspecified ~ 2021.0 LTS | - | |
| Phoenix Contact | AXC F 2152 (2404267) | unspecified ~ 2021.0 LTS | - | |
| Phoenix Contact | AXC F 3152 (1069208) | unspecified ~ 2021.0 LTS | - | |
| Phoenix Contact | RFC 4072S (1051328 | unspecified ~ 2021.0 LTS | - | |
| Phoenix Contact | AXC F 2152 Starterkit (1046568) | unspecified ~ 2021.0 LTS | - | |
| Phoenix Contact | PLCnext Technology Starterkit (1188165) | unspecified ~ 2021.0 LTS | - |
II. Public POCs for CVE-2020-12521
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://cert.vde.com/en-us/advisories/vde-2020-049x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2020-12521
Same Patch Batch · Phoenix Contact · 2020-12-17 · 5 CVEs total
| CVE-2020-12517 | 8.8 HIGH | Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: An authenticated low p |
| CVE-2020-12519 | 8.8 HIGH | Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: An attacker can use th |
| CVE-2020-12518 | 5.5 MEDIUM | Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: An attacker can use th |
| CVE-2020-12523 | 5.4 MEDIUM | Phoenix Contact mGuard Devices versions before 8.8.3: LAN ports get functional after reboo |
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Same weakness: CWE-20
V. Comments for CVE-2020-12521
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