CVE-2019-5450 : What You Need to Know
Learn about CVE-2019-5450, a vulnerability in Nextcloud Android app allowing HTML manipulation in directory names. Find mitigation steps and long-term security practices.
Before version 3.7.0 of the Nextcloud Android app, there was a flaw in the handling of HTML tags in directory names that could be exploited to customize the appearance of the directory name in the header bar using basic HTML.
Understanding CVE-2019-5450
This CVE involves improper sanitization of HTML in directory names in the Nextcloud Android app.
What is CVE-2019-5450?
This vulnerability allowed attackers to style directory names in the header bar by using basic HTML, impacting version 3.7.0 of the Nextcloud Android app.
The Impact of CVE-2019-5450
The vulnerability could be exploited by malicious actors to manipulate the appearance of directory names, potentially leading to confusion or social engineering attacks.
Technical Details of CVE-2019-5450
This section provides more technical insights into the CVE.
Vulnerability Description
The flaw in the Nextcloud Android app allowed the customization of directory names in the header bar using basic HTML, due to improper handling of HTML tags.
Affected Systems and Versions
- Product: com.nextcloud.client
- Version: 3.7.0
Exploitation Mechanism
Attackers could exploit this vulnerability by inserting HTML tags in directory names to alter their appearance in the header bar.
Mitigation and Prevention
Protecting systems from CVE-2019-5450 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the Nextcloud Android app to version 3.7.0 or higher to mitigate the vulnerability.
- Avoid using HTML tags in directory names to prevent potential exploitation.
Long-Term Security Practices
- Regularly update software and applications to patch known vulnerabilities.
- Educate users on safe naming conventions to prevent HTML-related exploits.
- Implement security measures to sanitize user inputs and prevent HTML injection attacks.
- Conduct regular security audits to identify and address similar vulnerabilities.
Patching and Updates
Ensure that all systems and applications are regularly updated to the latest versions to address security vulnerabilities like CVE-2019-5450.