CVE-2020-12140 : What You Need to Know
Learn about CVE-2020-12140, a buffer overflow vulnerability in Contiki-NG 4.4 and earlier versions, enabling attackers to execute arbitrary code via malicious L2CAP frames. Find mitigation steps and preventive measures.
Contiki-NG 4.4 and earlier versions are affected by a buffer overflow vulnerability in the BLE stack, allowing attackers to execute arbitrary code via malicious L2CAP frames.
Understanding CVE-2020-12140
A buffer overflow vulnerability in the BLE stack of Contiki-NG 4.4 and earlier versions enables attackers to run arbitrary code by exploiting malicious L2CAP frames.
What is CVE-2020-12140?
This CVE identifies a buffer overflow in os/net/mac/ble/ble-l2cap.c in Contiki-NG, which can be abused by attackers to execute arbitrary code through malicious L2CAP frames.
The Impact of CVE-2020-12140
The vulnerability poses a severe risk as it allows threat actors to gain unauthorized access and execute malicious code on affected systems.
Technical Details of CVE-2020-12140
The technical aspects of the CVE provide insights into the vulnerability's description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The buffer overflow in os/net/mac/ble/ble-l2cap.c in Contiki-NG 4.4 and earlier versions permits attackers to execute arbitrary code via malicious L2CAP frames.
Affected Systems and Versions
- Product: Contiki-NG 4.4 and earlier
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
Attackers exploit the vulnerability by crafting and sending malicious L2CAP frames to trigger the buffer overflow and execute arbitrary code.
Mitigation and Prevention
To address CVE-2020-12140, immediate steps and long-term security practices are crucial.
Immediate Steps to Take
- Apply patches or updates provided by Contiki-NG promptly.
- Monitor network traffic for any suspicious activities.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing.
- Educate users and administrators about secure coding practices and the risks of buffer overflows.
Patching and Updates
- Stay informed about security advisories from Contiki-NG and apply patches as soon as they are released.