CVE-2021-26709 : Exploit Details and Defense Strategies
Learn about CVE-2021-26709 affecting D-Link DSL-320B-D1 devices, allowing remote attackers to exploit Stack-Based Buffer Overflows and compromise the device. Find mitigation steps here.
D-Link DSL-320B-D1 devices through EU_1.25 are vulnerable to multiple Stack-Based Buffer Overflows allowing unauthenticated remote attackers to compromise the device. This vulnerability affects products that are no longer supported.
Understanding CVE-2021-26709
This section provides insight into the impact, technical details, and mitigation strategies related to CVE-2021-26709.
What is CVE-2021-26709?
CVE-2021-26709 is a vulnerability in D-Link DSL-320B-D1 devices through EU_1.25, enabling remote attackers to execute Stack-Based Buffer Overflows via the login.xgi user and pass parameters.
The Impact of CVE-2021-26709
The vulnerability allows unauthenticated remote attackers to take control of affected devices, posing a significant security risk to users and their data.
Technical Details of CVE-2021-26709
Explore the specifics of the vulnerability, affected systems, versions, and exploitation methods.
Vulnerability Description
Multiple Stack-Based Buffer Overflows in D-Link DSL-320B-D1 devices through EU_1.25 that can be exploited remotely, potentially leading to complete device compromise.
Affected Systems and Versions
The vulnerability impacts D-Link DSL-320B-D1 devices running firmware version EU_1.25 and older, specifically those that are no longer supported.
Exploitation Mechanism
Unauthenticated remote attackers can exploit the flaw by sending malicious input to the login.xgi user and pass parameters, enabling them to execute arbitrary code.
Mitigation and Prevention
Discover the immediate steps and long-term practices to enhance security and safeguard systems against CVE-2021-26709.
Immediate Steps to Take
Users should immediately stop using affected devices, disconnect them from the network, and follow vendor recommendations for further actions.
Long-Term Security Practices
Regularly update firmware, use strong and unique passwords, implement network segmentation, and conduct security assessments to mitigate similar risks.
Patching and Updates
Users should check the vendor's security bulletin for patch releases and apply updates promptly to address the vulnerability.