Detections
Analytics
Siemens Desigo PXC Improper Authentication (CVE-2018-4834)
critical Tenable OT Security Plugin ID 500747
Synopsis
The remote OT asset is affected by a vulnerability.Description
A vulnerability has been identified in Desigo PXC00-E.D V4.10 (All versions < V4.10.111), Desigo PXC00-E.D V5.00 (All versions < V5.0.171), Desigo PXC00-E.D V5.10 (All versions < V5.10.69), Desigo PXC00-E.D V6.00 (All versions < V6.0.204), Desigo PXC00/64/128-U V4.10 (All versions < V4.10.111 only with web module), Desigo PXC00/64/128-U V5.00 (All versions < V5.0.171 only with web module), Desigo PXC00/64/128-U V5.10 (All versions < V5.10.69 only with web module), Desigo PXC00/64/128-U V6.00 (All versions < V6.0.204 only with web module), Desigo PXC001-E.D V4.10 (All versions < V4.10.111), Desigo PXC001-E.D V5.00 (All versions < V5.0.171), Desigo PXC001-E.D V5.10 (All versions < V5.10.69), Desigo PXC001-E.D V6.00 (All versions < V6.0.204), Desigo PXC100-E.D V4.10 (All versions < V4.10.111), Desigo PXC100-E.D V5.00 (All versions < V5.0.171), Desigo PXC100-E.D V5.10 (All versions < V5.10.69), Desigo PXC100-E.D V6.00 (All versions < V6.0.204), Desigo PXC12-E.D V4.10 (All versions < V4.10.111), Desigo PXC12-E.D V5.00 (All versions < V5.0.171), Desigo PXC12-E.D V5.10 (All versions < V5.10.69), Desigo PXC12-E.D V6.00 (All versions < V6.0.204), Desigo PXC200-E.D V4.10 (All versions < V4.10.111), Desigo PXC200-E.D V5.00 (All versions < V5.0.171), Desigo PXC200-E.D V5.10 (All versions < V5.10.69), Desigo PXC200-E.D V6.00 (All versions < V6.0.204), Desigo PXC22-E.D V4.10 (All versions < V4.10.111), Desigo PXC22-E.D V5.00 (All versions < V5.0.171), Desigo PXC22-E.D V5.10 (All versions < V5.10.69), Desigo PXC22-E.D V6.00 (All versions < V6.0.204), Desigo PXC22.1-E.D V4.10 (All versions < V4.10.111), Desigo PXC22.1-E.D V5.00 (All versions < V5.0.171), Desigo PXC22.1-E.D V5.10 (All versions < V5.10.69), Desigo PXC22.1-E.D V6.00 (All versions < V6.0.204), Desigo PXC36.1-E.D V4.10 (All versions < V4.10.111), Desigo PXC36.1-E.D V5.00 (All versions < V5.0.171), Desigo PXC36.1-E.D V5.10 (All versions < V5.10.69), Desigo PXC36.1-E.D V6.00 (All versions < V6.0.204), Desigo PXC50-E.D V4.10 (All versions < V4.10.111), Desigo PXC50-E.D V5.00 (All versions < V5.0.171), Desigo PXC50-E.D V5.10 (All versions < V5.10.69), Desigo PXC50-E.D V6.00 (All versions < V6.0.204), Desigo PXM20-E V4.10 (All versions < V4.10.111), Desigo PXM20-E V5.00 (All versions < V5.0.171), Desigo PXM20-E V5.10 (All versions < V5.10.69), Desigo PXM20-E V6.00 (All versions < V6.0.204).A remote attacker with network access to the device could potentially upload a new firmware image to the devices without prior authentication.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.Siemens has provided updated versions that fix the vulnerability for the affected products. Siemens recommends users update to version v4.10.111, v5.00.171, v5.10.069, or v6.00.204 or later. Updates can be obtained from Siemens customer support or a local partner.
As a general security measure, Siemens strongly recommends protecting network access to the devices with appropriate mechanisms. Siemens advises configuring the environment according to Siemens operational guidelines in order to run the devices in a protected IT environment.
https://www.siemens.com/cert/operational-guidelines-industrial-security
For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-824231 at the following location:
http://www.siemens.com/cert/en/cert-security-advisories.htm
See Also
https://cert-portal.siemens.com/productcert/pdf/ssa-824231.pdf
https://www.cisa.gov/news-events/ics-advisories/icsa-18-025-02b
Plugin Details
Severity: Critical
ID: 500747
Version: 1.9
Type: remote
Family: Tenable.ot
Published: 1/25/2023
Updated: 11/25/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-4834
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:pxm20-e_firmware, cpe:/o:siemens:pxc001-e.d_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Ease: No known exploits are available
Patch Publication Date: 1/24/2018
Vulnerability Publication Date: 1/24/2018
Reference Information
CVE: CVE-2018-4834