Vulnerability Description
An issue was discovered on Brother MFC-J491DW C1806180757 devices. The printer's web-interface password hash can be retrieved without authentication, because the response header of any failed login attempt returns an incomplete authorization cookie. The value of the authorization cookie is the MD5 hash of the password in hexadecimal. An attacker can easily derive the true MD5 hash from this, and use offline cracking attacks to obtain administrative access to the device.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://global.brother
- https://seclists.org/fulldisclosure/2024/Jul/14
- https://support.brother.com/g/s/security/en/index.html
- http://seclists.org/fulldisclosure/2024/Jul/14
FAQ
What is CVE-2019-20457?
CVE-2019-20457 is a vulnerability with a CVSS score of 9.1 (CRITICAL). An issue was discovered on Brother MFC-J491DW C1806180757 devices. The printer's web-interface password hash can be retrieved without authentication, because the response header of any failed login at...
How severe is CVE-2019-20457?
CVE-2019-20457 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-20457?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.