CVE-2023-24493 : Security Advisory and Response
Learn about CVE-2023-24493, a formula injection flaw in Tenable.sc allowing attackers to export reports with malicious formulas. Mitigate risks with immediate steps, security practices, and timely updates.
This CVE-2023-24493 article provides an insightful understanding of a formula injection vulnerability present in Tenable.sc. Learn about the impact, technical details, as well as mitigation and prevention steps related to this security issue.
Understanding CVE-2023-24493
The formula injection vulnerability in Tenable.sc arises from the lack of proper validation of user-supplied input before it is returned to users. This could be exploited by an authenticated attacker through the reporting system to export reports containing harmful formulas that may require a victim to approve and execute on a host.
What is CVE-2023-24493?
CVE-2023-24493 is a formula injection vulnerability existing in Tenable.sc, a security platform, allowing authenticated attackers to export reports containing malicious formulas.
The Impact of CVE-2023-24493
If successfully exploited, this vulnerability could lead to the execution of harmful formulas on a host, potentially compromising the security and integrity of the system.
Technical Details of CVE-2023-24493
Understanding the vulnerability's description, affected systems and versions, as well as the exploitation mechanism is crucial in addressing CVE-2023-24493 effectively.
Vulnerability Description
The vulnerability stems from improper validation of user-supplied input in Tenable.sc, enabling attackers to export reports with malicious formulas.
Affected Systems and Versions
Tenable.sc versions 5.23.1 and earlier are affected by this formula injection vulnerability.
Exploitation Mechanism
An authenticated attacker can leverage the reporting system in Tenable.sc to export reports with harmful formulas, which may then be approved and executed on a host.
Mitigation and Prevention
Taking immediate steps, adopting long-term security practices, and ensuring timely patching and updates are essential in mitigating the risks posed by CVE-2023-24493.
Immediate Steps to Take
It is recommended to restrict access to the reporting system, monitor for any unusual activities, and educate users on avoiding executing unfamiliar or suspicious formulas.
Long-Term Security Practices
Implementing strict input validation processes, conducting regular security assessments, and staying informed about security best practices can enhance the overall security posture.
Patching and Updates
Ensure timely installation of security patches and updates provided by Tenable to address the formula injection vulnerability in Tenable.sc, safeguarding the system from potential exploitation.