What is the CVSS score of CVE-2018-4843?

CVE-2018-4843 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.5%.

Simatic Cp 343 1 Firmware CVE-2018-4843

MEDIUM

Improper Input Validation (CWE-20)

2018-03-20 productcert@siemens.com

Microsoft Denial Of Service Simatic Cp 343 1 Firmware Simatic Cp 443 1 Firmware Simatic S7 1500 Firmware Simatic S7 300 Firmware Simatic S7 400 H V6 Firmware Simatic S7 400 Pn Dp V6 Firmware Simatic S7 400 Pn Dp V7 Firmware Simatic S7 410 Firmware Simatic Winac Rtx 2010 Firmware Sinumerik 828D Firmware Softnet Pn Io Linux Firmware

6.5

CVSS 3.1 · Vendor: siemens

Severity by source

Vendor (siemens) PRIMARY

6.5 MEDIUM

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from Vendor (siemens) · only source for this CVE.

CVSS VectorVendor: siemens

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Mar 20, 2018 - 14:29 cve.org

MEDIUM 6.5

DescriptionCVE.org

A vulnerability has been identified in 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 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V1.7.0), SIMATIC S7-1500 Software Controller (All versions < V1.7.0), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.2.16), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.7), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.1), SIMATIC WinAC RTX 2010 (All versions < V2010 SP3), SIMATIC WinAC RTX F 2010 (All versions < V2010 SP3), SINUMERIK 828D (All versions < V4.7 SP6 HF1), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), 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), Softnet PROFINET IO for PC-based Windows systems (All versions). Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system.

The security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system.

AnalysisAI

A vulnerability has been identified in 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 416-3 PN/DP V7 (All. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. A vulnerability has been identified in 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 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V1.7.0), SIMATIC S7-1500 Software Controller (All versions < V1.7.0), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.2.16), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.7), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.1), SIMATIC WinAC RTX 2010 (All versions < V2010 SP3), SIMATIC WinAC RTX F 2010 (All versions < V2010 SP3), SINUMERIK 828D (All versions < V4.7 SP6 HF1), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), 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), Softnet PROFINET IO for PC-based Windows systems (All versions). Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system. The security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system. Affected products include: Siemens Simatic Cp 343-1 Firmware, Siemens Simatic Cp 443-1 Firmware, Siemens Simatic S7-1500 Firmware, Siemens Simatic S7-300 Firmware, Siemens Simatic S7-400 H V6 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.