1. EXECUTIVE SUMMARY
- CVSS v3.1 7.2
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: 2N
- Equipment: Access Commander
- Vulnerabilities: Path Traversal, Insufficient Verification of Data Authenticity
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to escalate their privileges, execute arbitrary code, or gain root access to the system.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of 2N Access Commander, an IP access control system, are affected:
Access Commander: versions 3.1.1.2 and prior
3.2 Vulnerability Overview
3.2.1 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22
In 2N Access Commander versions 3.1.1.2 and prior, a Path Traversal vulnerability could allow an attacker to write files on the filesystem to achieve arbitrary remote code execution.
CVE-2024-47253 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
3.2.2 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345
In 2N Access Commander versions 3.1.1.2 and prior, an Insufficient Verification of Data Authenticity vulnerability could allow an attacker to escalate their privileges and gain root access to the system.
CVE-2024-47254 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.3 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).
3.2.3 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345
In 2N Access Commander versions 3.1.1.2 and prior, a local attacker can escalate their privileges in the system which could allow for arbitrary code execution with root permissions.
CVE-2024-47255 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.7 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Government Services and Facilities, Commercial Facilities, Communications, Information Technology
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Noam Moshe of Claroty Research – Team82 reported these vulnerabilities to CISA.
4. MITIGATIONS
2N has released the following to fix these vulnerabilities:
- Access Commander: Update to Access Commander version 3.2 from the 2N download center
Please see 2N’s security advisory for additional details.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, 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.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY
- November 19, 2024: Initial Publication