Detections
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Siemens SIMATIC NET CP, SINEMA & SCALANCE Integer Overflow (CVE-2021-41990)

high Tenable OT Security Plugin ID 501592

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Siemens SIMATIC NET CP, SINEMA and SCALANCE Products Affected by Vulnerabilities in Third-Party Component strongSwan. The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

https://github.com/strongswan/strongswan/releases/tag/5.9.4

http://www.nessus.org/u?f4f2d8ca

https://www.debian.org/security/2021/dsa-4989

http://www.nessus.org/u?cd6b6abd

http://www.nessus.org/u?ea295ec8

http://www.nessus.org/u?d5453363

https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf

Plugin Details

Severity: High

ID: 501592

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 8/3/2023

Updated: 8/24/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-41990

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:6gk5615-0aa00-2aa2_firmware:-, cpe:/o:siemens:6gk5804-0ap00-2aa2_firmware:-, cpe:/o:siemens:6gk5812-1aa00-2aa2_firmware:-, cpe:/o:siemens:6gk5812-1ba00-2aa2_firmware:-, cpe:/o:siemens:6gk5816-1aa00-2aa2_firmware:-, cpe:/o:siemens:6gk5816-1ba00-2aa2_firmware:-, cpe:/o:siemens:6gk5826-2ab00-2ab2_firmware:-, cpe:/o:siemens:6gk5856-2ea00-3aa1_firmware:-, cpe:/o:siemens:6gk5856-2ea00-3da1_firmware:-, cpe:/o:siemens:6gk5874-2aa00-2aa2_firmware:-, cpe:/o:siemens:6gk5874-3aa00-2aa2_firmware:-, cpe:/o:siemens:6gk5876-3aa02-2ba2_firmware:-, cpe:/o:siemens:6gk5876-3aa02-2ea2_firmware:-, cpe:/o:siemens:6gk5876-4aa00-2ba2_firmware:-, cpe:/o:siemens:6gk5876-4aa00-2da2_firmware:-

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 10/18/2021

Vulnerability Publication Date: 10/18/2021

Reference Information

CVE: CVE-2021-41990