Successful exploitation of these vulnerabilities could allow a remote unauthenticated attacker to connect to the module via FTP and bypass authentication to log in.
Mitsubishi Electric reports these vulnerabilities affect the following MELSEC iQ-R Series/iQ-F Series EtherNet/IP Modules and EtherNet/IP Configuration tool:
Authentication bypass vulnerability in FTP function on EtherNet/IP module due to weak password requirements allows a remote unauthenticated attacker to access to the module via FTP by dictionary attack or password sniffing.
CVE-2023-2060 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has been calculated for CVE-2023-2060. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
Authentication bypass vulnerability in FTP function on EtherNet/IP module due to use of hard-coded credentials allows a remote unauthenticated attacker to obtain a hard-coded password and access to the module via FTP.
CVE-2023-2061 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has been calculated for CVE-2023-2061. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
The EtherNet/IP configuration tool that displays unmasked password due to missing password field masking results in authentication bypass vulnerability, which allows a remote unauthenticated attacker to access the module via FTP.
CVE-2023-2062 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A CVSS v4 score has been calculated for CVE-2023-2062. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).
Information disclosure, tampering, deletion, destruction vulnerability exists in the FTP function on EtherNet/IP module via file upload/download due to unrestricted upload of file with dangerous type.
CVE-2023-2063 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
A CVSS v4 score has been calculated for CVE-2023-2063. A base score of 5.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N).
Iie Karada reported these vulnerabilities to Mitsubishi Electric.
Mitsubishi Electric recommends that users of the affected products take the following actions.:
Mitsubishi Electric recommends that customers take the following mitigation measures to minimize the risk of exploiting these vulnerabilities common to RJ71EIP91 and FX5-ENET/IP:
Mitsubishi Electric recommends that customers take the following mitigation measures to minimize the risk of exploiting these vulnerabilities common to SW1DNN-EIPCT-BD and SW1DNN-EIPCTFX5-BD:
For specific update instructions and additional details see the Mitsubishi Electric advisory.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 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 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-2060
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web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-2063
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