CVE-2022-38393 : Security Advisory and Response
Discover the impact of CVE-2022-38393 affecting Asus RT-AX82U routers and learn about the technical details, mitigation strategies, and immediate steps for prevention.
A denial of service vulnerability has been identified in the cfg_server cm_processConnDiagPktList opcode of Asus RT-AX82U 3.0.0.4.386_49674-ge182230 router's configuration service. This vulnerability could be exploited by a specially-crafted network packet, potentially leading to denial of service.
Understanding CVE-2022-38393
This section will delve into the specifics of CVE-2022-38393, shedding light on the impact, technical details, and mitigation strategies.
What is CVE-2022-38393?
The CVE-2022-38393 vulnerability involves an out-of-bounds read (CWE-125) issue in the Asus RT-AX82U router. It allows an attacker to disrupt the router's configuration service through a malicious network packet.
The Impact of CVE-2022-38393
The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.5. An attacker can exploit the flaw to trigger a denial of service, potentially affecting the availability of the network.
Technical Details of CVE-2022-38393
Let's explore the technical aspects of CVE-2022-38393, including vulnerability description, affected systems, and exploitation mechanisms.
Vulnerability Description
The vulnerability resides in the cfg_server cm_processConnDiagPktList opcode of the Asus RT-AX82U router's configuration service. A specially-crafted network packet can exploit this flaw to trigger a denial of service.
Affected Systems and Versions
The impacted system is the Asus RT-AX82U router running version 3.0.0.4.386_49674-ge182230.
Exploitation Mechanism
By sending a malicious packet to the router, an attacker can exploit the vulnerability to disrupt the configuration service, leading to denial of service.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks associated with CVE-2022-38393 and prevent potential exploits.
Immediate Steps to Take
Users are advised to apply relevant security patches provided by Asus to address the vulnerability. Additionally, configuring firewall rules to filter out malicious packets can prevent exploitation.
Long-Term Security Practices
Regularly updating router firmware and monitoring network traffic for suspicious activities can bolster long-term security measures.
Patching and Updates
Stay informed about security advisories from Asus and promptly apply patches to safeguard against known vulnerabilities.