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CVE-2018-16557

Quick assessment

Affected
Siemens SIMATIC S7-400 CPU 412-1 DP V7
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Siemens SIMATIC S7-400是德国西门子（Siemens）公司的一款用于制造和过程自动化领域的可编程逻辑控制器产品。 Siemens SIMATIC S7-400中存在数据伪造问题漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：Siemens S7-400 6及之前版本(包括F)，S7-400 PN/DP 7所有版本(包括F)，S7-400H 4.5及之前版本，S7-400H 6所有版本，S7-410 8.2.1之前版本。

CVSS 8.2 · High EPSS 0.82% · P56
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I. Basic Information for CVE-2018-16557

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.2.1), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Sending of specially crafted packets to port 102/tcp via Ethernet interface via PROFIBUS or Multi Point Interfaces (MPI) could cause a denial of service condition on affected devices. Flashing with a firmware image may be required to recover the CPU. Successful exploitation requires an attacker to have network access to port 102/tcp via Ethernet interface or to be able to send messages via PROFIBUS or Multi Point Interfaces (MPI) to the device. No user interaction is required. If no access protection is configured, no privileges are required to exploit the security vulnerability. The vulnerability could allow causing a denial of service condition of the core functionality of the CPU, compromising the availability of the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC S7-400 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC S7-400是德国西门子（Siemens）公司的一款用于制造和过程自动化领域的可编程逻辑控制器产品。 Siemens SIMATIC S7-400中存在数据伪造问题漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：Siemens S7-400 6及之前版本(包括F)，S7-400 PN/DP 7所有版本(包括F)，S7-400H 4.5及之前版本，S7-400H 6所有版本，S7-410 8.2.1之前版本。
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
Siemens SIMATIC S7-400 CPU 412-1 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 412-2 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 414-2 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 414-3 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIMATIC S7-400 CPU 416-2 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 416-3 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIMATIC S7-400 CPU 416F-2 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIMATIC S7-400 CPU 417-4 DP V7 All versions -
Siemens SIMATIC S7-400 CPU 412-2 PN V7 All versions < V7.0.3 -
Siemens SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants) All versions -
Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) All versions < V6.0.9 -
Siemens SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) All versions -
Siemens SIMATIC S7-410 CPU family (incl. SIPLUS variants) All versions < V8.2.1 -
Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7 All versions < V7.0.3 -
Siemens SIPLUS S7-400 CPU 416-3 V7 All versions -
Siemens SIPLUS S7-400 CPU 417-4 V7 All versions -

II. Public POCs for CVE-2018-16557

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III. Intelligence Information for CVE-2018-16557

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Vendor Advisories for CVE-2018-16557 (1)

IV. Related Vulnerabilities

Same product: SIMATIC S7-400 CPU 412-1 DP V7
Same vendor: Siemens
Same weakness: CWE-347

V. Comments for CVE-2018-16557

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