CVE-2019-20457

Nov. 8, 2024, 7:01 p.m.

9.1
Critical

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.

Product(s) Impacted

Product Versions
Brother MFC-J491DW

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-276
Incorrect Default Permissions
During installation, installed file permissions are set to allow anyone to modify those files.

References

https://global.brother
https://seclists.org/fulldisclosure/2024/Jul/14
https://support.brother.com/g/s/security/en/index.html

Tags

cve@mitre.org
CWE-276
2024-11-07
CVE-2019-20457

CVSS Score

9.1 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

    View Vector String

Timeline

Published: Nov. 7, 2024, 6:15 p.m.
Last Modified: Nov. 8, 2024, 7:01 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.