CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
31.5%
Successful exploitation of this vulnerability could allow an attacker to execute code after tricking users into accessing malicious links.
The following versions of Siemens PLM Help Server, a documentation server, are affected:
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (βCROSS-SITE SCRIPTINGβ) CWE-79
A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the affected application that could allow an attacker to execute malicious javascript code by tricking users into accessing a malicious link.
CVE-2022-44575 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
Michael Heinzl reported this vulnerability to Siemens.
This product has reached end-of-life, and security vulnerabilities are no longer patched. Siemens released a new version of Documentation Server, which fixes this vulnerability.
Siemens recommends upgrading to Siemens Documentation Server V2.1 or later versions. Once the new Documentation Server is installed, users should download and install the documentation packages. Information on installation is included in the install guides. Refer to PL8681100 (login required) for additional information.
Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
Do not open unknown links while working on PLM Help Server V4.2
As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemensβ operational guidelines for industrial security and to follow the recommendations in the product manuals.
For more information, see Siemens security advisory SSA-274282 in HTML or CSAF.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-44575
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