CVE-2021-26727 : Vulnerability Insights and Analysis
Find out about CVE-2021-26727 involving multiple command injections and buffer overflows in SubNet_handler_func function, impacting Lanner Inc IAC-AST2500A firmware version 1.10.0. Learn the impact, technical details, and mitigation steps.
Multiple command injections and stack-based buffer overflows vulnerabilities in the SubNet_handler_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This vulnerability affects Lanner Inc IAC-AST2500A standard firmware version 1.10.0.
Understanding CVE-2021-26727
This section provides an overview of the CVE-2021-26727 vulnerability.
What is CVE-2021-26727?
CVE-2021-26727 involves multiple command injections and stack-based buffer overflows in the SubNet_handler_func function of spx_restservice, enabling an attacker to execute malicious code using root privileges.
The Impact of CVE-2021-26727
The impact of this CVE is critical, with a CVSS base score of 10.0 (Critical). It can result in high confidentiality, integrity, and availability impact on the affected systems.
Technical Details of CVE-2021-26727
This section delves into the technical aspects of the CVE-2021-26727 vulnerability.
Vulnerability Description
CVE-2021-26727 is a combination of command injections and stack-based buffer overflows that allow unauthorized execution of code on the target system, posing severe security risks.
Affected Systems and Versions
The vulnerability affects Lanner Inc IAC-AST2500A standard firmware version 1.10.0, putting systems running this specific version at risk.
Exploitation Mechanism
Attackers can exploit CVE-2021-26727 by crafting malicious inputs to trigger the command injections and buffer overflows, leading to unauthorized code execution.
Mitigation and Prevention
In this section, we explore strategies to mitigate and prevent the CVE-2021-26727 vulnerability.
Immediate Steps to Take
System administrators should immediately apply security patches provided by Lanner Inc to address the vulnerabilities and prevent exploitation.
Long-Term Security Practices
Implementing strong input validation mechanisms, regular security assessments, and network segmentation can enhance the long-term security posture against similar exploits.
Patching and Updates
Regularly check for firmware updates and patches released by Lanner Inc to stay protected against known vulnerabilities like CVE-2021-26727.