CVE-2021-33357 : Vulnerability Insights and Analysis
Learn about CVE-2021-33357, a vulnerability in RaspAP versions 2.6 to 2.6.5 allowing unauthenticated attackers to execute arbitrary OS commands. Find mitigation steps and best practices.
A vulnerability exists in RaspAP 2.6 to 2.6.5 in the "iface" GET parameter in /ajax/networking/get_netcfg.php, enabling unauthenticated attackers to execute arbitrary OS commands.
Understanding CVE-2021-33357
This CVE highlights a security issue in RaspAP versions 2.6 to 2.6.5 where the handling of special characters in the "iface" parameter can lead to command execution by unauthorized users.
What is CVE-2021-33357?
The vulnerability in RaspAP versions 2.6 to 2.6.5 allows unauthenticated attackers to run arbitrary operating system commands by manipulating the "iface" parameter with special characters like ";".
The Impact of CVE-2021-33357
This vulnerability poses a significant risk as it enables attackers to execute commands on the underlying operating system without authentication, potentially leading to unauthorized access and control of the system.
Technical Details of CVE-2021-33357
This section provides specific technical details related to the CVE.
Vulnerability Description
The vulnerability exists in the way RaspAP handles input in the "iface" GET parameter, allowing special characters like ";" to trigger the execution of arbitrary OS commands.
Affected Systems and Versions
RaspAP versions 2.6 to 2.6.5 are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious request containing specially crafted input in the "iface" parameter, thereby executing unauthorized commands.
Mitigation and Prevention
To address CVE-2021-33357 and enhance overall security, follow these guidelines.
Immediate Steps to Take
Users should update RaspAP to a patched version beyond 2.6.5 to mitigate the vulnerability. Additionally, restrict access to the affected endpoint to trusted entities only.
Long-Term Security Practices
Implement input validation mechanisms to sanitize user input and prevent the execution of malicious commands. Regularly monitor and apply security patches to safeguard against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates released by RaspAP and promptly apply patches to address known vulnerabilities.