CVE-2017-5120 : What You Need to Know
Learn about CVE-2017-5120, a Google Chrome vulnerability allowing attackers to downgrade HTTPS requests to HTTP. Find mitigation steps and affected versions here.
A vulnerability in Google Chrome versions prior to 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android allowed attackers to downgrade HTTPS requests to HTTP by exploiting a redirecting www mismatch in browser navigation.
Understanding CVE-2017-5120
This CVE involves an inappropriate usage of redirecting www mismatch in browser navigation in Google Chrome.
What is CVE-2017-5120?
The vulnerability in Google Chrome versions earlier than 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android allowed attackers to potentially downgrade HTTPS requests to HTTP by manipulating browser navigation.
The Impact of CVE-2017-5120
The vulnerability could enable an attacker to create a customized HTML page to intercept HTTPS requests and transmit information in plain text, compromising user data security.
Technical Details of CVE-2017-5120
This section provides detailed technical information about the CVE.
Vulnerability Description
The flaw in Google Chrome allowed attackers to exploit a redirecting www mismatch in browser navigation, leading to the potential downgrade of secure HTTPS connections to unencrypted HTTP.
Affected Systems and Versions
- Google Chrome versions prior to 61.0.3163.79 for Mac, Windows, and Linux
- Google Chrome version 61.0.3163.81 for Android
Exploitation Mechanism
Attackers could create a customized HTML page to intercept HTTPS requests and manipulate browser navigation, tricking Chrome into transmitting data in plain text.
Mitigation and Prevention
Protecting systems from CVE-2017-5120 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Google Chrome to versions 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android
- Avoid entering sensitive information on unsecured websites
Long-Term Security Practices
- Regularly update browsers and security software
- Educate users on identifying secure websites and HTTPS protocols
Patching and Updates
- Apply security patches promptly
- Monitor vendor advisories for future updates and security recommendations