CVE-2020-11708 : Security Advisory and Response

An issue was discovered in ProVide (formerly zFTPServer) through 13.1. Privilege escalation can occur via the /ajax/SetUserInfo messages parameter because of the EXECUTE() feature, which is for executing programs when certain events are triggered.

Understanding CVE-2020-11708

This CVE identifies a privilege escalation vulnerability in ProVide (formerly zFTPServer) through version 13.1.

What is CVE-2020-11708?

The vulnerability allows attackers to escalate privileges through the /ajax/SetUserInfo messages parameter utilizing the EXECUTE() feature.

The Impact of CVE-2020-11708

The vulnerability could lead to unauthorized access and execution of arbitrary programs on the affected system, potentially resulting in further compromise.

Technical Details of CVE-2020-11708

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability arises from improper handling of the EXECUTE() feature in the /ajax/SetUserInfo messages parameter.

Affected Systems and Versions

Product: ProVide (formerly zFTPServer)
Versions affected: Up to 13.1

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the /ajax/SetUserInfo messages parameter to trigger the EXECUTE() feature, leading to privilege escalation.

Mitigation and Prevention

Protecting systems from CVE-2020-11708 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the EXECUTE() feature if not essential for system functionality.
Monitor and restrict access to the /ajax/SetUserInfo messages parameter.

Long-Term Security Practices

Regularly update and patch the ProVide software to mitigate known vulnerabilities.
Implement least privilege access controls to limit the impact of potential privilege escalation.

Patching and Updates

Apply patches provided by the vendor promptly to address the vulnerability and enhance system security.