CVE-2019-13321 Explained : Impact and Mitigation
Learn about CVE-2019-13321, a vulnerability in Xiaomi Browser prior to version 10.4.0 that allows nearby attackers to execute unauthorized code through a crafted HTML response. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in Xiaomi Browser prior to version 10.4.0 allows nearby attackers to execute unauthorized code by manipulating the Captive Portal through a crafted HTML response.
Understanding CVE-2019-13321
This CVE involves a security flaw in Xiaomi Browser that enables attackers to execute code without user interaction.
What is CVE-2019-13321?
The vulnerability in Xiaomi Browser prior to version 10.4.0 allows nearby attackers to execute unauthorized code by manipulating the Captive Portal through a crafted HTML response.
The Impact of CVE-2019-13321
- Attackers can execute code within the current process by exploiting this vulnerability.
- User interaction is required, where the target device must connect to a malicious access point.
Technical Details of CVE-2019-13321
This section provides technical details of the vulnerability.
Vulnerability Description
The flaw lies in how the Captive Portal of Xiaomi Browser handles HTTP responses, allowing attackers to open a browser and direct it to a specified location without user interaction.
Affected Systems and Versions
- Affected Product: Browser
- Vendor: Xiaomi
- Vulnerable Versions: Prior to 10.4.0
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- CVSS Base Score: 5.5 (Medium)
- CWE: CWE-732: Incorrect Permission Assignment for Critical Resource
Mitigation and Prevention
Protecting systems from CVE-2019-13321 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Xiaomi Browser to version 10.4.0 or later to mitigate the vulnerability.
- Avoid connecting to untrusted or malicious access points.
Long-Term Security Practices
- Regularly update software and applications to patch known vulnerabilities.
- Educate users on safe browsing practices and the risks of connecting to unknown networks.
- Implement network security measures to detect and prevent unauthorized access.
- Monitor for unusual network activity that may indicate an exploit attempt.
- Stay informed about security advisories and updates from Xiaomi.
Patching and Updates
- Apply security patches and updates provided by Xiaomi promptly to address known vulnerabilities.