#VU18041 Permissions, Privileges, and Access Controls in Mozilla Firefox - CVE-2019-9803
Published: March 21, 2019
Vulnerability identifier: #VU18041
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-9803
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Mozilla Firefox
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to perform man-in-the-middle attack.
The vulnerability exists due to incorrect enforcement of Upgrade-Insecure-Requests (UIR) for same-origin navigation allowing the browser to navigate to HTTP URL instead of HTTPS. A remote attacker can perform man-in-the-middle (MitM) attack and gain access to sensitive information.
Remediation
Install updates from vendor's website.