CVE-2021-27104 : Exploit Details and Defense Strategies
Discover the details of CVE-2021-27104 affecting Accellion File Transfer Appliance, allowing attackers to execute OS commands via crafted POST requests. Learn how to mitigate this security risk.
Accellion File Transfer Appliance (FTA) 9_12_370 and earlier versions are vulnerable to OS command execution through a specifically crafted POST request targeting admin endpoints. The issue has been addressed in version FTA_9_12_380 and subsequent releases.
Understanding CVE-2021-27104
This section will provide an overview of the CVE-2021-27104 vulnerability.
What is CVE-2021-27104?
CVE-2021-27104 relates to a security flaw in Accellion FTA versions 9_12_370 and below, where an attacker can execute arbitrary operating system commands by exploiting a crafted POST request on various admin endpoints.
The Impact of CVE-2021-27104
An attacker could leverage this vulnerability to execute unauthorized commands on the affected system, potentially leading to further compromise of sensitive information or disruption of services.
Technical Details of CVE-2021-27104
In this section, we will delve into the technical aspects of CVE-2021-27104.
Vulnerability Description
The vulnerability in Accellion FTA versions 9_12_370 and earlier allows threat actors to execute malicious commands through specially constructed POST requests, posing a severe security risk.
Affected Systems and Versions
Accellion FTA versions 9_12_370 and prior are impacted by this vulnerability, putting systems with these versions at risk of exploitation.
Exploitation Mechanism
Malicious actors can exploit CVE-2021-27104 by sending manipulated POST requests to specific admin endpoints, enabling them to execute unauthorized OS commands.
Mitigation and Prevention
This section offers guidelines on mitigating the risks associated with CVE-2021-27104.
Immediate Steps to Take
Organizations should upgrade their Accellion FTA installations to version FTA_9_12_380 or later to prevent exploitation of this vulnerability.
Long-Term Security Practices
Implementing robust security measures, such as network segmentation, least privilege access, and regular security audits, can enhance the overall security posture against similar threats.
Patching and Updates
Regularly monitor official Accellion advisories and promptly apply security patches and updates to safeguard systems against known vulnerabilities.