CVE-2019-5101 Explained : Impact and Mitigation
Learn about CVE-2019-5101, a vulnerability in OpenWrt versions 18.06.4 and 15.05.1 allowing information leakage through improper certificate validation. Find mitigation steps here.
A vulnerability has been identified in the ustream-ssl library of OpenWrt versions 18.06.4 and 15.05.1, allowing for information leakage through improper certificate validation.
Understanding CVE-2019-5101
This CVE involves a vulnerability in the ustream-ssl library of OpenWrt versions 18.06.4 and 15.05.1, which can be exploited for information leakage.
What is CVE-2019-5101?
The vulnerability in the ustream-ssl library of OpenWrt versions 18.06.4 and 15.05.1 allows attackers to perform man-in-the-middle attacks and intercept data sent by clients.
The Impact of CVE-2019-5101
The vulnerability can lead to information leakage due to improper certificate validation, potentially exposing sensitive data to unauthorized parties.
Technical Details of CVE-2019-5101
This section provides technical details of the CVE.
Vulnerability Description
The vulnerability lies in the _ustream_ssl_init function and the _ustream_ssl_poll function of OpenWrt versions 18.06.4 and 15.05.1, enabling attackers to intercept data during SSL connections.
Affected Systems and Versions
- Vendor: OpenWRT
- Affected Products: OpenWRT
- Vulnerable Versions: OpenWrt 15.05.1, via wget (busybox) and OpenWrt 18.06.4, via wget (uclient-fetch)
Exploitation Mechanism
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
- Base Score: 4 (Medium)
Mitigation and Prevention
Protect your systems from CVE-2019-5101 with the following steps.
Immediate Steps to Take
- Update OpenWrt to a patched version that addresses the vulnerability.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Implement secure communication protocols to prevent man-in-the-middle attacks.
- Regularly update and patch software to mitigate potential vulnerabilities.
Patching and Updates
- Stay informed about security updates released by OpenWrt.
- Apply patches promptly to ensure the security of your systems.