CVE-2022-36053 : Security Advisory and Response
Learn about CVE-2022-36053, a vulnerability in Contiki-NG, enabling out-of-bounds read attacks. Discover impact, affected systems, exploitation, and mitigation steps.
Contiki-NG, an open-source operating system for IoT devices, is vulnerable to an out-of-bounds read due to a lack of bounds checking in its IPv6 network stack's buffer module. An attacker can exploit this to read data outside the packet buffer.
Understanding CVE-2022-36053
This CVE highlights a vulnerability in Contiki-NG's network stack that can be exploited by an attacker to read data beyond the packet buffer.
What is CVE-2022-36053?
CVE-2022-36053 exposes a security flaw in the Contiki-NG operating system, allowing malicious actors to perform an out-of-bounds read attack by crafting a specific packet.
The Impact of CVE-2022-36053
The vulnerability poses a medium threat with a CVSS base score of 5.9, affecting confidentiality and potentially leading to data exposure.
Technical Details of CVE-2022-36053
The vulnerability arises from a lack of bounds checking in the function uipbuf_get_next_header, potentially leading to reading data outside the packet buffer.
Vulnerability Description
The flaw resides in the buffer module of the low-power IPv6 network stack of Contiki-NG, enabling the reading of data outside the expected packet buffer.
Affected Systems and Versions
Contiki-NG versions prior to 4.8 are impacted by this vulnerability, leaving IoT devices running on these versions at risk.
Exploitation Mechanism
By sending a specially crafted packet, an attacker can manipulate the structure to extend beyond the packet's end and read sensitive data.
Mitigation and Prevention
To protect systems from CVE-2022-36053, immediate action should be taken to apply the provided patch and follow security best practices.
Immediate Steps to Take
Update Contiki-NG to version 4.8 or later to mitigate the vulnerability and prevent potential exploitation by malicious actors.
Long-Term Security Practices
Regularly monitor for security updates and patches released by the Contiki-NG project to address any emerging vulnerabilities and improve the overall security posture.
Patching and Updates
Stay informed about the latest security advisories from Contiki-NG and promptly apply patches to secure the system against known threats.