Insecure Inherited Permissions in Mozilla Firefox and Firefox ESR - CVE-2021-23998
Published: April 19, 2021
Vulnerability identifier: #VU52337
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-23998
CWE-ID: CWE-277
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Detailed vulnerability description
the vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the way HTTP pages inherit a secure lock icon, when navigating from an HTTP page. A remote attacker can create a specially crafted webpage that through a series of complicated navigation will force the browser to display a secure lock icon on an unencrypted HTTP page.
How to mitigate CVE-2021-23998
Install updates from vendor's website.