CVE-2019-5039 : Exploit Details and Defense Strategies
Learn about CVE-2019-5039, a critical security flaw in Openweave-core version 4.0.2 by Nest Labs allowing command execution. Find out the impact, affected systems, and mitigation steps.
Openweave-core version 4.0.2 by Nest Labs contains a security flaw allowing command execution through a heap-based buffer overflow. This vulnerability stems from the ASN1 certificate writing functionality.
Understanding CVE-2019-5039
Openweave-core version 4.0.2 has a critical security vulnerability that can be exploited by attackers to execute arbitrary code.
What is CVE-2019-5039?
The vulnerability in Openweave-core version 4.0.2 allows attackers to trigger a heap-based buffer overflow by manipulating a weave certificate, leading to the execution of unauthorized commands.
The Impact of CVE-2019-5039
The vulnerability has a CVSS base score of 7.5, indicating a high severity level. It can result in the compromise of confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2019-5039
Openweave-core version 4.0.2 vulnerability details.
Vulnerability Description
The flaw in the ASN1 certificate writing functionality enables attackers to exploit a heap-based buffer overflow by crafting a specific weave certificate.
Affected Systems and Versions
- Product: Nest Labs
- Version: Nest Labs Openweave-core 4.0.2
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact: High on Confidentiality, Integrity, and Availability
Mitigation and Prevention
Steps to address and prevent CVE-2019-5039.
Immediate Steps to Take
- Apply security patches provided by Nest Labs promptly.
- Monitor network traffic for any suspicious activity.
- Implement network segmentation to limit the attack surface.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security audits and penetration testing to identify vulnerabilities.
- Educate users and employees on safe computing practices.
Patching and Updates
- Stay informed about security updates from Nest Labs.
- Apply patches as soon as they are released to mitigate the risk of exploitation.