CISA released one Industrial Control Systems (ICS) advisory on May 25, 2023. This advisory provides timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-145-01 Moxa MXsecurity Series CISA encourages users and administrators to review the newly released ICS advisory for technical details and mitigations.CISAraw:749c5fdcaa51e1bbc4192b9637bc2f11 – 2023-05-25T15:25:10.000Z

May 25, 2023Elle CeeDee

Cybersecurity
CISA released one Industrial Control Systems (ICS) advisory on May 25, 2023. This advisory provides timely information about current security issues, vulnerabilities, and exploits surrounding ICS.

ICSA-23-145-01 Moxa MXsecurity Series

CISA encourages users and administrators to review the newly released ICS advisory for technical details and mitigations.CISAraw:749c5fdcaa51e1bbc4192b9637bc2f11CISAThu, 25 May 23 12:00:00 +0000

Schedule Demo: Managed IT

Use Our Online Scheduling Tool

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog , based on evidence of active exploitation. CVE-2023-2 868  Barracuda Networks ESG Appliance Improper Input Validation 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 . This product is provided subject to this Notification  and this Privacy & Use  policy.CISAraw:c10caedb098110c81742083ca1bb7557 – 2023-05-30T12:15:47.000Z
Read More →
CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog , based on evidence of active exploitation. CVE-2023-2 868  Barracuda Networks ESG Appliance Improper Input Validation 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 . This product is provided subject to this Notification  and this Privacy & Use  policy.CISAraw:750720923d0bad309449ad3f150687d9 – 2023-05-26T17:30:31.000Z
Read More →
1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION:  Exploitable remotely/low attack complexity Vendor:  Moxa Equipment:  MXsecurity Series Vulnerabilities:  Command Injection and Use of Hard-Coded Credentials 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an unauthorized user to bypass authentication or to execute arbitrary commands on the device. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Moxa reports these vulnerabilities affect the following MXsecurity Series: MXsecurity Series: Software v1.0 3.2 VULNERABILITY OVERVIEW 3.2.1 COMMAND INJECTION CWE-77 A remote attacker, who has gained authorization privileges, could execute arbitrary commands on the device. CVE-2023-33235 has been assigned to this vulnerability. A CVSS v3 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 USE OF HARD-CODED CREDENTIALS CWE-798 An attacker could bypass authentication for web-based application programmable interfaces (APIs). CVE-2023-33236 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:  Multiple Sectors COUNTRIES/AREAS DEPLOYED:  Worldwide COMPANY HEADQUARTERS LOCATION:  Taiwan 3.4 RESEARCHER Simon Janz, working with Trend Micro Zero Day Initiative, reported these vulnerabilities to CISA. 4. MITIGATIONS Moxa has developed a solution to address these vulnerabilities. Users should upgrade to software v1.0.1 or higher . Users are encouraged to visit Moxa’s security advisory MPSA-230301 for more information. 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, and ensure they are not accessible from the Internet . Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use 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 its 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 at 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 . 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 exploits specifically target these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have low attack complexity.CISAraw:66fa049b99d25d316ca59a4333911833 – 2023-05-25T15:18:29.000Z
Read More →