CVE-2019-11721 Explained : Impact and Mitigation
Learn about CVE-2019-11721, a Firefox vulnerability allowing domain spoofing attacks through a unicode character 'kra'. Find mitigation steps and preventive measures here.
A vulnerability in Firefox versions before 68 allows attackers to spoof domain names using a unicode character 'kra' that resembles a standard 'k' character in the address bar.
Understanding CVE-2019-11721
This CVE identifies a security flaw in Firefox versions prior to 68 that can be exploited for domain spoofing attacks.
What is CVE-2019-11721?
The vulnerability in Firefox versions before 68 enables attackers to use a unicode character to mimic a standard character in the address bar, potentially leading to domain spoofing attacks.
The Impact of CVE-2019-11721
- Attackers can manipulate the unicode character 'kra' to imitate a standard 'k' character, deceiving users with non-punycode text in the address bar.
Technical Details of CVE-2019-11721
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability allows the use of a unicode character to spoof a standard character in the address bar, facilitating domain spoofing attacks.
Affected Systems and Versions
- Product: Firefox
- Vendor: Mozilla
- Versions Affected: < 68
Exploitation Mechanism
- Attackers exploit the unicode character 'kra' to imitate a standard character, leading to domain spoofing attacks.
Mitigation and Prevention
Protect your systems and data from CVE-2019-11721.
Immediate Steps to Take
- Update Firefox to version 68 or above to mitigate the vulnerability.
- Be cautious while entering sensitive information on websites.
Long-Term Security Practices
- Regularly update browsers and security software.
- Educate users about phishing and domain spoofing techniques.
Patching and Updates
- Apply security patches provided by Mozilla promptly to address this vulnerability.