CVE-2019-8359 : Exploit Details and Defense Strategies
Discover the impact of CVE-2019-8359 affecting Contiki-NG up to 4.3 and Contiki up to 3.0. Learn about the out-of-bounds write vulnerability during 6LoWPAN fragment reassembly and how to mitigate the risk.
A vulnerability has been identified in Contiki-NG versions up to 4.3 and Contiki versions up to 3.0, allowing for an out-of-bounds write in the data section during 6LoWPAN fragment reassembly.
Understanding CVE-2019-8359
This CVE involves a potential security issue in Contiki-NG and Contiki versions, impacting the reassembly of 6LoWPAN fragments.
What is CVE-2019-8359?
The vulnerability in Contiki-NG and Contiki versions allows for an out-of-bounds write in the data section during the reassembly of 6LoWPAN fragments, specifically when handling manipulated fragment offsets.
The Impact of CVE-2019-8359
The vulnerability poses a risk of unauthorized access and potential exploitation by attackers to manipulate fragment offsets, leading to security breaches and data corruption.
Technical Details of CVE-2019-8359
This section provides detailed technical insights into the CVE.
Vulnerability Description
An out-of-bounds write vulnerability exists in the data section during 6LoWPAN fragment reassembly in the sicslowpan.c file within the os/net/ipv6 directory of Contiki-NG and Contiki versions.
Affected Systems and Versions
- Contiki-NG versions up to 4.3
- Contiki versions up to 3.0
Exploitation Mechanism
The vulnerability arises when dealing with manipulated fragment offsets in the sicslowpan.c file, potentially leading to unauthorized data modification and security breaches.
Mitigation and Prevention
Protecting systems from CVE-2019-8359 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply patches or updates provided by the vendor to address the vulnerability promptly.
- Monitor network traffic for any suspicious activities that may indicate exploitation attempts.
Long-Term Security Practices
- Implement network segmentation to contain potential attacks and limit their impact.
- Regularly update and patch systems to prevent known vulnerabilities from being exploited.
Patching and Updates
- Stay informed about security advisories and updates from Contiki-NG and Contiki to apply patches as soon as they are available.