CVE-2019-11489 : Exploit Details and Defense Strategies

SimplyBook.me Enterprise software had a vulnerability in its administrative management interface pre-2019-04-23, allowing low-privileged users to escalate their privileges to full admin rights.

Understanding CVE-2019-11489

What is CVE-2019-11489?

The vulnerability in SimplyBook.me Enterprise software allowed authenticated low-privileged users to gain full admin rights by exploiting a flaw in the administrative management interface.

The Impact of CVE-2019-11489

This vulnerability could lead to unauthorized access and potential misuse of administrative functionalities, compromising the security and integrity of the system.

Technical Details of CVE-2019-11489

Vulnerability Description

The flaw in SimplyBook.me Enterprise software's administrative interface enabled low-privileged users to manipulate JSON data via a specially crafted HTTP PUT request, granting them full admin privileges.

Affected Systems and Versions

Product: SimplyBook.me Enterprise
Vendor: N/A
Versions: All versions before 2019-04-23

Exploitation Mechanism

The attack involved sending a specifically crafted HTTP PUT request to the URI path /v2/rest/, allowing users to modify JSON data and elevate their privileges.

Mitigation and Prevention

Immediate Steps to Take

Update SimplyBook.me Enterprise software to the latest version that includes a patch for CVE-2019-11489.
Monitor user activities for any suspicious behavior indicating privilege escalation attempts.

Long-Term Security Practices

Implement the principle of least privilege to restrict users' access rights based on their roles.
Regularly conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security updates and patches released by SimplyBook.me for CVE-2019-11489.