CVE-2017-2894 : Exploit Details and Defense Strategies
Learn about CVE-2017-2894 affecting Cesanta Mongoose version 6.8, allowing remote code execution via a stack buffer overflow. Discover mitigation steps and the impact of this critical vulnerability.
Cesanta Mongoose version 6.8 has a critical vulnerability in its MQTT packet parsing feature that can lead to remote code execution through a stack buffer overflow.
Understanding CVE-2017-2894
Cesanta Mongoose version 6.8 is susceptible to a stack buffer overflow vulnerability due to improper handling of MQTT packets, allowing attackers to execute remote code.
What is CVE-2017-2894?
The vulnerability in Cesanta Mongoose version 6.8 enables attackers to exploit the MQTT packet parsing functionality, triggering a stack buffer overflow that can result in the execution of remote code.
The Impact of CVE-2017-2894
The vulnerability has a CVSS base score of 9.8, indicating a critical severity level with high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2017-2894
Cesanta Mongoose version 6.8 vulnerability technical specifics.
Vulnerability Description
The vulnerability allows for a stack buffer overflow in the MQTT packet parsing feature, enabling remote code execution by sending a specially crafted MQTT SUBSCRIBE packet.
Affected Systems and Versions
- Product: Mongoose
- Vendor: Cesanta
- Version: 6.8
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Exploitation involves sending a manipulated MQTT packet through the network to trigger the vulnerability.
Mitigation and Prevention
Protecting systems from CVE-2017-2894.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Implement network-level controls to filter out potentially malicious MQTT packets.
- Monitor network traffic for any signs of exploitation attempts.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses.
Patching and Updates
- Stay informed about security advisories and updates from Cesanta to apply patches as soon as they are available.