Learn about CVE-2021-20076 affecting Tenable.sc 5.13.0 - 5.17.0. This RCE vulnerability allows unauthorized code execution, posing serious security risks. Take immediate action for mitigation.
Tenable.sc and Tenable.sc Core versions 5.13.0 through 5.17.0 have been identified with a vulnerability allowing an authenticated, unprivileged user to execute Remote Code on the server.
Understanding CVE-2021-20076
This section delves into the intricacies of CVE-2021-20076.
What is CVE-2021-20076?
Tenable.sc versions 5.13.0 through 5.17.0 have an authenticated RCE vulnerability allowing unauthorized code execution through PHP unserialization.
The Impact of CVE-2021-20076
The vulnerability enables an attacker to execute arbitrary commands on the Tenable.sc server, compromising its integrity and data.
Technical Details of CVE-2021-20076
Explore the technical aspects
Vulnerability Description
The flaw in Tenable.sc versions 5.13.0 through 5.17.0 permits RCE for authenticated, unprivileged users through PHP unserialization.
Affected Systems and Versions
Tenable.sc and Tenable.sc Core versions 5.13.0 through 5.17.0 are susceptible to this RCE vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability to execute malicious code on the Tenable.sc server via PHP unserialization.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-20076.
Immediate Steps to Take
Users are advised to apply security patches, restrict server access, and monitor for any unusual activities.
Long-Term Security Practices
Implementing network segmentation, regular security audits, and user access controls can enhance overall security.
Patching and Updates
Regularly update Tenable.sc to the latest versions and security patches released by the vendor.