CVE-2021-28845 : What You Need to Know
Learn about CVE-2021-28845, a Null Pointer Dereference vulnerability in TRENDnet TEW-755AP, TEW-755AP2KAC, TEW-821DAP2KAC, and TEW-825DAP devices. Find out the impact, affected systems, exploitation, and mitigation steps.
A Null Pointer Dereference vulnerability has been identified in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03. This CVE could potentially lead to a denial of service attack initiated by a remote malicious user.
Understanding CVE-2021-28845
This section provides insights into the nature and impact of the identified vulnerability.
What is CVE-2021-28845?
The CVE-2021-28845 vulnerability is a Null Pointer Dereference issue found in various TRENDnet products. It allows a remote attacker to exploit the flaw by sending a specific POST request without a language key, causing a denial of service.
The Impact of CVE-2021-28845
The impact of this vulnerability is significant as it can be leveraged by a malicious actor to disrupt the normal operation of affected devices, potentially leading to a denial of service condition.
Technical Details of CVE-2021-28845
In this section, we delve into the technical aspects surrounding CVE-2021-28845.
Vulnerability Description
The vulnerability arises due to a Null Pointer Dereference issue in the mentioned TRENDnet devices, allowing an attacker to trigger a denial of service by exploiting a specific language-related action.
Affected Systems and Versions
The affected systems include TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03.
Exploitation Mechanism
The vulnerability can be exploited remotely by sending a crafted POST request to apply_cgi without including a language key, thereby causing the application to crash.
Mitigation and Prevention
This section outlines measures to mitigate the risks associated with CVE-2021-28845.
Immediate Steps to Take
Users are advised to apply security patches or updates provided by TRENDnet to address this vulnerability promptly. Network administrators should monitor for any unusual activity that may indicate exploitation attempts.
Long-Term Security Practices
Implementing strong network security measures, such as network segmentation, access controls, and regular security assessments, can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for updates and patches released by TRENDnet to mitigate the CVE-2021-28845 vulnerability and ensure the security of the affected devices.