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1. EXECUTIVE SUMMARY

CVSS v4 5.1
ATTENTION: Exploitable remotely/low attack complexity
Vendor: PTC
Equipment: Codebeamer
Vulnerability: Cross-site Scripting

2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to inject malicious code in the application.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of PTC Codebeamer, an application lifecycle management platform, are affected:

Codebeamer: version 22.10 SP9 and prior
Codebeamer: version 2.0.0.3 and prior
Codebeamer: version 2.1.0.0

3.2 Vulnerability Overview
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79
PTC Codebeamer is vulnerable to a cross site scripting vulnerability that could allow an attacker to inject and execute malicious code.
CVE-2024-3951 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L).
A CVSS v4 score has also been calculated for CVE-2024-3951. A base score of 5.1 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L).
3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Information Technology, Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER
Marek Holka (ETAS) reported this vulnerability to PTC.
4. MITIGATIONS
PTC released the following resolutions:

Codebeamer: Update to version 22.10 SP10 or later
Codebeamer: Update to version 2.0.0.4 or later
Codebeamer: Update to version 2.1.0.1 or later

For more information, see PTC's customer support article.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

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/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report 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:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
5. UPDATE HISTORY

May 07, 2024: Initial Publication


https://www.cisa.gov/news-events/ics-advisories/icsa-24-128-01