CVE-2019-20457 Information disclosure in n/a
An attacker can retrieve the administrator password hash from failed login responses on Brother printers, enabling offline cracking and administrative access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-20457?
CVE-2019-20457 is a critical vulnerability in n/a, published on 7 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-276
Which versions are affected by CVE-2019-20457?
How do I fix CVE-2019-20457?
No fix has been published for CVE-2019-20457 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-20457 being exploited?
There is no known exploitation of CVE-2019-20457 in the wild and no public exploit code.
Sources
Also known as GHSA-cp74-46v8-qrjr.