Siemens S7-1200 Uncontrolled Resource Consumption

high Tenable.ot Plugin ID 500351
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 PN/DP CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions). Affected devices contain a vulnerability that could cause a Denial-of-Service condition of the web server by sending specially crafted HTTP requests to ports 80/tcp and 443/tcp. The security vulnerability could be exploited by an attacker with network access to an affected device. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the availability of the device’s web server. Beyond the web service, no other functions or interfaces are affected by the Denial-of-Service condition.

Solution

Refer to vendor advisory for Security Updates

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-431678.pdf

https://www.us-cert.gov/ics/advisories/icsa-20-042-05

Plugin Details

Severity: High

ID: 500351

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2019-13940

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:2.3:o:siemens:s7-1200_cpu_1211c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1211c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1212c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1212c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1214c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1214c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1215c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1215c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1217c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1217c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1212fc_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1212fc:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1214fc_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1214fc:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:s7-1200_cpu_1215fc_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:s7-1200_cpu_1215fc:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_s7-1200_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_s7-1200:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_cpu_1211c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_cpu_1211c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_cpu_1212c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_cpu_1212c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_cpu_1214c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_cpu_1214c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_cpu_1215c_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_cpu_1215c:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_319-3_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_319-3_pn\/dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_pn\/dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_317-2_dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_317-2_pn\/dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_319-3_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_319-3_pn\/dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_s7-300_cpu_314_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_s7-300_cpu_314:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_s7-300_cpu_315-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_s7-300_cpu_315-2_dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_s7-300_cpu_315-2_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_s7-300_cpu_315-2_pn\/dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:siplus_s7-300_cpu_317-2_pn\/dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:siplus_s7-300_cpu_317-2_pn\/dp:v6:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-400_pn\/dp_cpu_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-400_pn\/dp_cpu:v7:*:*:*:*:*:*:*

Patch Publication Date: 2/11/2020

Vulnerability Publication Date: 2/11/2020

Reference Information

CVE: CVE-2019-13940