CVE-2021-43471 Explained : Impact and Mitigation
Learn about CVE-2021-43471 affecting Canon LBP223 printers, allowing remote shutdowns without authentication, impacting device availability. Find mitigation steps and security practices.
Canon LBP223 printers are vulnerable to a denial of service attack due to a lack of authentication in the System Manager Mode login.
Understanding CVE-2021-43471
Canon printers with a specific model suffer from a critical vulnerability that allows attackers to remotely disable the device.
What is CVE-2021-43471?
Canon LBP223 printers allow access to the System Manager Mode without requiring a password or PIN, enabling unauthorized parties to disrupt printer functionality.
The Impact of CVE-2021-43471
The vulnerability permits malicious actors to remotely shut down Canon LBP223 printers, causing denial of service incidents and disrupting workflow.
Technical Details of CVE-2021-43471
The issue in Canon LBP223 printers is outlined with specific details below.
Vulnerability Description
The System Manager Mode login on Canon LBP223 printers lacks password or PIN requirements, enabling unauthorized shutdowns leading to denial of service.
Affected Systems and Versions
- Product: Canon LBP223 printers
- Version: All versions
Exploitation Mechanism
Attackers can exploit this flaw by gaining access to the System Manager Mode remotely and then shutting down the printer, impacting its availability and functionality.
Mitigation and Prevention
Protecting against CVE-2021-43471 is crucial for security hygiene.
Immediate Steps to Take
- Implement access controls and enforce strong authentication mechanisms.
- Monitor printer activity for suspicious behavior.
Long-Term Security Practices
- Regularly update firmware and apply security patches from Canon.
- Conduct security assessments of printers to identify vulnerabilities.
Patching and Updates
- Canon may release patches or updates to address this vulnerability; ensure to apply them promptly.