CVE-2022-47521 Explained : Impact and Mitigation
Learn about CVE-2022-47521, a Linux kernel vulnerability allowing remote attackers to trigger a heap-based buffer overflow. Find impact details, affected systems, and mitigation steps.
An issue was discovered in the Linux kernel before 6.0.11 that can trigger a heap-based buffer overflow in the WILC1000 wireless driver. This CVE affects the validation of IEEE80211_P2P_ATTR_CHANNEL_LIST in drivers/net/wireless/microchip/wilc1000/cfg80211.c.
Understanding CVE-2022-47521
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2022-47521.
What is CVE-2022-47521?
The CVE-2022-47521 vulnerability arises from missing validation of IEEE80211_P2P_ATTR_CHANNEL_LIST, leading to a heap-based buffer overflow in the WILC1000 wireless driver when processing Wi-Fi management frames.
The Impact of CVE-2022-47521
The impact of CVE-2022-47521 includes the potential for a remote attacker to exploit the vulnerability, resulting in a denial-of-service (DoS) condition or arbitrary code execution on the affected system.
Technical Details of CVE-2022-47521
Let's delve into the specifics of the vulnerability, including affected systems, versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability in the Linux kernel driver occurs due to improper validation of a specific attribute, allowing an attacker to trigger a heap-based buffer overflow.
Affected Systems and Versions
The CVE-2022-47521 affects the WILC1000 wireless driver in Linux kernel versions earlier than 6.0.11.
Exploitation Mechanism
By sending crafted Wi-Fi management frames, an attacker can exploit the vulnerability to execute arbitrary code or cause a DoS condition on the target system.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks associated with CVE-2022-47521 and enhance the security posture of affected systems.
Immediate Steps to Take
System administrators are advised to apply patches promptly, implement network segmentation, and monitor network traffic for any suspicious activity.
Long-Term Security Practices
Enforce strict input validation, conduct regular security assessments, and ensure timely updates to address security vulnerabilities.
Patching and Updates
Stay informed about security advisories and promptly apply patches released by the Linux kernel maintainers and related vendors.