CVE-2022-44257 : Vulnerability Insights and Analysis
Learn about CVE-2022-44257, a critical buffer overflow vulnerability in TOTOLINK LR350 V9.3.5u.6369_B20220309, enabling remote code execution and unauthorized access. Find mitigation steps here.
A buffer overflow vulnerability in TOTOLINK LR350 V9.3.5u.6369_B20220309 allows attackers to execute arbitrary code by exploiting a specific parameter in a particular function.
Understanding CVE-2022-44257
This section provides insights into the nature and impact of the CVE-2022-44257 vulnerability.
What is CVE-2022-44257?
The CVE-2022-44257 vulnerability exists in TOTOLINK LR350 V9.3.5u.6369_B20220309 due to a post-authentication buffer overflow caused by the handling of the 'pppoeUser' parameter in the 'setOpModeCfg' function. This flaw enables attackers to trigger the overflow and potentially execute arbitrary code on the target system.
The Impact of CVE-2022-44257
The exploitation of CVE-2022-44257 could lead to unauthorized remote code execution, compromise of sensitive information, and overall system control, posing a significant risk to the affected devices.
Technical Details of CVE-2022-44257
Delve into the specific technical aspects related to CVE-2022-44257.
Vulnerability Description
The vulnerability allows threat actors to manipulate the 'pppoeUser' parameter to overwrite the buffer, leading to buffer overflow and subsequent execution of malicious code with elevated privileges.
Affected Systems and Versions
The affected version of TOTOLINK LR350 V9.3.5u.6369_B20220309 is vulnerable to this exploit. Users of this version should take immediate action to mitigate the risk.
Exploitation Mechanism
Bad actors can exploit this vulnerability by crafting malicious input for the 'pppoeUser' parameter, sending it to the 'setOpModeCfg' function, which lacks proper input validation, thereby triggering the buffer overflow.
Mitigation and Prevention
Discover the necessary steps to address and prevent CVE-2022-44257 from causing harm.
Immediate Steps to Take
Users are advised to apply security patches provided by TOTOLINK promptly. Additionally, network segmentation and access control lists can help limit the vulnerability's impact.
Long-Term Security Practices
Regular security assessments, network monitoring, and employee cybersecurity training are essential for maintaining robust defenses against similar exploits in the future.
Patching and Updates
Stay informed about security updates released by TOTOLINK for the LR350 router series and ensure timely installation to eliminate the vulnerability's risk.