CVE-2020-5653 : Security Advisory and Response
Learn about CVE-2020-5653, a critical buffer overflow flaw in MELSEC iQ-R series products, allowing remote attackers to disrupt networks or execute malicious code. Find mitigation steps here.
A buffer overflow vulnerability in the TCP/IP function of MELSEC iQ-R series products allows remote attackers to disrupt network functions or execute malicious code.
Understanding CVE-2020-5653
This CVE involves a critical buffer overflow issue in specific modules of the MELSEC iQ-R series, potentially enabling unauthorized remote access.
What is CVE-2020-5653?
The vulnerability in the firmware of MELSEC iQ-R series products permits attackers to halt network operations or run malicious programs through specially crafted packets.
The Impact of CVE-2020-5653
The security flaw poses a severe risk as it can be exploited remotely by unauthenticated attackers, compromising the integrity and availability of the affected systems.
Technical Details of CVE-2020-5653
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The buffer overflow vulnerability in the TCP/IP function of MELSEC iQ-R series products allows attackers to disrupt network operations or execute malicious code remotely.
Affected Systems and Versions
- Product: MELSEC iQ-R series
- Vendor: Mitsubishi Electric Corporation
- Vulnerable Versions: RJ71EIP91, RJ71PN92, RD81DL96, RD81MES96N, RD81OPC96
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted packets to the affected modules, triggering a buffer overflow and potentially gaining unauthorized access.
Mitigation and Prevention
Protecting systems from CVE-2020-5653 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply security patches provided by Mitsubishi Electric Corporation promptly.
- Implement network segmentation to limit exposure to potential attacks.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update firmware and software to mitigate known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address weaknesses.
Patching and Updates
- Stay informed about security advisories from the vendor.
- Follow best practices for secure configuration and network architecture.