Spoofing attack in Mozilla Firefox - CVE-2020-12409
Published: June 3, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU28533
CSH Severity: Medium
CVSS v4.0: 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:P/U:Green
CVE-ID: CVE-2020-12409
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of certain blank characters in URL in unicode that were rendered as space instead of an encoded URL. A remote attacker can use a specially crafted URL to spoof page content of legitimate website.
How to mitigate CVE-2020-12409
Install updates from vendor's website.