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CISA released three Industrial Control Systems (ICS) advisories on October 31, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-304-02 INEA ME RTU ICSA-23-304-03 Zavio IP Camera ICSA-23-208-03 Mitsubishi Electric CNC Series (Update B) CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.9 ATTENTION: Exploitable remotely/low attack complexity Vendor: INEA Equipment: ME RTU Vulnerabilities: OS Command Injection, Improper Authentication 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow remote code execution. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Inea ME RTU are affected: ME RTU: versions 3.36b and prior 3.2 Vulnerability Overview 3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND (‘OS COMMAND INJECTION')CWE-78 Versions of INEA ME RTU firmware 3.36b and prior are vulnerable to operating system (OS) command injection, which could allow remote code execution. CVE-2023-35762 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H). 3.2.2 IMPROPER AUTHENTICATION CWE-287 Versions of INEA ME RTU firmware 3.36b and prior do not require authentication to the "root" account on the host system of the device. This could allow an attacker to obtain admin-level access to the host system. CVE-2023-29155 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Energy, Water and Wastewater, Transportation COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Slovenia 3.4 RESEARCHER Floris Hendriks of Radboud University reported these vulnerabilities to CISA. 4. MITIGATIONS INEA recommends users to upgrade ME RTU to firmware version 3.37. CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: 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 October 31, 2023: Initial Publication

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Zavio Equipment: IP Camera Vulnerability: Improper Restriction of Operations within the Bounds of a Memory Buffer, OS Command Injection 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow remote code execution. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Zavio IP Cameras are affected: CF7500: version M2.1.6.05 CF7300: version M2.1.6.05 CF7201: version M2.1.6.05 CF7501: version M2.1.6.05 CB3211: version M2.1.6.05 CB3212: version M2.1.6.05 CB5220: version M2.1.6.05 CB6231: version M2.1.6.05 B8520: version M2.1.6.05 B8220: version M2.1.6.05 CD321: version M2.1.6.05 3.2 Vulnerability Overview 3.2.1 Stack-based Buffer Overflow CWE-121 Zavio IP Cameras CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321 with firmware version M2.1.6.05 are vulnerable to multiple instances of stack-based overflows. While processing XML elements from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution. CVE-2023-3959 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.2.2 Stack-based Buffer Overflow CWE-121 Zavio IP Cameras CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321 with firmware version M2.1.6.05 are vulnerable to multiple instances of stack-based overflows. While parsing certain XML elements from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution. CVE-2023-45225 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.2.3 Stack-based Buffer Overflow CWE-121 Zavio IP Cameras CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321 with firmware version M2.1.6.05 are vulnerable to multiple instances of stack-based overflows. During the processing and parsing of certain fields in XML elements from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution. CVE-2023-43755 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). 3.2.4 Stack-based Buffer Overflow CWE-121 Zavio IP Cameras CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321 with firmware version M2.1.6.05 are vulnerable to stack-based overflows. During the process of updating certain settings sent from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution. CVE-2023-39435 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). 3.2.5 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78 Zavio IP Cameras CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321 with firmware version M2.1.6.05 has a command injection vulnerability in their implementation of their binaries and handling of network requests. CVE-2023-4249 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Multiple COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Taiwan 3.4 RESEARCHER Attila Szasz of BugProve reported these vulnerabilities to CISA. Mike Haldas of CCTV Camera Pros assisted in the coordination of these vulnerabilities with CISA. 4. MITIGATIONS The affected products are end-of-life and have been identified to contain many insecurities. The vendor, Zavio, is no longer actively in business and therefore development for firmware fixes, mitigations, and updates are not available and will not become available. CISA recommends users discontinue use of the product. 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 October 31, 2023: Initial Publication

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-46747 F5 BIG-IP Authentication Bypass Vulnerability CVE-2023-46748 F5 BIG-IP SQL Injection Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

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