Detections
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Siemens SCALANCE XCM332 Use After Free (CVE-2022-40674)

high Tenable OT Security Plugin ID 501086

Synopsis

The remote OT asset is affected by a vulnerability.

Description

libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.

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 released an update for the SCALANCE XCM332 and recommends updating to the latest version:

- SCALANCE XCM332 (6GK5332-0GA01-2AC2): Update to V2.2 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at the Siemens Industrial Security web page.

For further inquiries on security vulnerabilities in Siemens products and solutions, users should contact the Siemens ProductCERT.

For more information see the associated Siemens security advisory SSA-558014 in HTML and CSAF.

See Also

https://cert-portal.siemens.com/productcert/html/ssa-558014.html

https://github.com/libexpat/libexpat/pull/629

https://github.com/libexpat/libexpat/pull/640

https://www.debian.org/security/2022/dsa-5236

https://lists.debian.org/debian-lts-announce/2022/09/msg00029.html

https://security.gentoo.org/glsa/202209-24

http://www.nessus.org/u?4e66e98c

http://www.nessus.org/u?a62d82f5

https://security.netapp.com/advisory/ntap-20221028-0008/

https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-09

http://www.nessus.org/u?291bc448

http://www.nessus.org/u?2bdd746c

http://www.nessus.org/u?727fe43d

https://security.gentoo.org/glsa/202211-06

http://www.nessus.org/u?4af41997

Plugin Details

Severity: High

ID: 501086

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 5/2/2023

Updated: 7/24/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2022-40674

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/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:scalance_xcm332_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 9/14/2022

Vulnerability Publication Date: 9/14/2022

Reference Information

CVE: CVE-2022-40674