CVE-2020-9857 : Vulnerability Insights and Analysis
Learn about CVE-2020-9857, a macOS vulnerability allowing malicious websites to access Safari autofilled data. Find mitigation steps and update information here.
An issue existed in the parsing of URLs in macOS, potentially allowing a malicious website to exfiltrate autofilled data in Safari. This CVE has been fixed in macOS Catalina 10.15.5 and Security Updates for Mojave and High Sierra.
Understanding CVE-2020-9857
This CVE addresses a vulnerability related to URL parsing in macOS that could be exploited by a malicious website to extract autofilled data in Safari.
What is CVE-2020-9857?
CVE-2020-9857 is a security vulnerability in macOS that could enable a malicious website to access autofilled data in Safari due to improper URL parsing.
The Impact of CVE-2020-9857
The vulnerability could lead to the exfiltration of sensitive information from Safari, potentially compromising user data.
Technical Details of CVE-2020-9857
This section provides more technical insights into the CVE.
Vulnerability Description
The issue stemmed from inadequate input validation during URL parsing, allowing unauthorized access to autofilled data in Safari.
Affected Systems and Versions
- Affected Product: macOS
- Vendor: Apple
- Affected Versions: Less than macOS 10.15 (unspecified version)
Exploitation Mechanism
A malicious website could exploit the vulnerability in URL parsing to extract autofilled data from Safari users.
Mitigation and Prevention
Protecting systems from CVE-2020-9857 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Update macOS to version 10.15.5 or apply the Security Updates for Mojave and High Sierra to mitigate the vulnerability.
- Avoid visiting untrusted websites or clicking on suspicious links to prevent potential exploitation.
Long-Term Security Practices
- Regularly update software and security patches to stay protected against known vulnerabilities.
- Educate users about safe browsing practices and the risks associated with sharing sensitive information online.
Patching and Updates
Ensure that all relevant security updates and patches are promptly applied to safeguard systems against potential threats.