CVE-2021-20034 : Exploit Details and Defense Strategies
Learn about CVE-2021-20034, an improper access control vulnerability in SonicWall SMA100 products, allowing remote attackers to reset devices to factory default settings. Find out the impact, affected systems, and mitigation steps.
This article provides details about CVE-2021-20034, an improper access control vulnerability in SonicWall SMA100 that allows a remote attacker to potentially reset the device to factory default settings.
Understanding CVE-2021-20034
CVE-2021-20034 is a security vulnerability found in SonicWall SMA100 products, impacting specific versions and potentially leading to a serious security issue.
What is CVE-2021-20034?
The CVE-2021-20034 vulnerability in SMA100 enables a remote unauthenticated attacker to bypass path traversal checks, delete any file, and potentially cause the device to reboot to factory default settings.
The Impact of CVE-2021-20034
This vulnerability could result in unauthorized deletion of critical files, leading to a loss of data, service disruption, or even complete compromise of the affected SMA100 devices.
Technical Details of CVE-2021-20034
Understanding the specifics of the CVE-2021-20034 vulnerability is crucial for taking appropriate mitigation steps.
Vulnerability Description
The improper access control vulnerability in the affected SonicWall SMA100 versions allows attackers to delete arbitrary files, potentially causing the device to reset to factory default settings.
Affected Systems and Versions
The vulnerability affects SonicWall SMA100 versions 9.0.0.10-28sv and earlier, 10.2.0.7-34sv and earlier, and 10.2.1.0-17sv and earlier.
Exploitation Mechanism
Remote unauthenticated attackers exploit this vulnerability by bypassing path traversal checks, enabling them to delete files and force the device into a reboot state.
Mitigation and Prevention
Taking immediate action and implementing long-term security practices are crucial for safeguarding systems against CVE-2021-20034.
Immediate Steps to Take
Users should apply patches provided by SonicWall promptly to address this vulnerability. Additionally, consider implementing access controls and monitoring for suspicious activities.
Long-Term Security Practices
Regularly updating and patching systems, configuring proper access controls, and implementing network monitoring can enhance overall security posture and prevent similar vulnerabilities.
Patching and Updates
SonicWall has released updates to address CVE-2021-20034. Organizations using affected versions of SMA100 should prioritize applying these patches to mitigate the risk of exploitation.