CVE-2018-10519 : Exploit Details and Defense Strategies

CMS Made Simple (CMSMS) 2.2.7 contains a privilege escalation vulnerability that allows an ordinary user to elevate their privileges to admin user status by manipulating the eff_uid value within $_COOKIE[$this->_loginkey] to be set as 1. This vulnerability is a result of an incorrect fix for CVE-2018-10084.

Understanding CVE-2018-10519

This CVE involves a privilege escalation vulnerability in CMS Made Simple (CMSMS) 2.2.7.

What is CVE-2018-10519?

This CVE refers to a security flaw in CMS Made Simple (CMSMS) 2.2.7 that enables an ordinary user to escalate their privileges to admin user status by modifying specific values.

The Impact of CVE-2018-10519

The vulnerability allows unauthorized users to gain admin access, posing a significant security risk to the affected systems.

Technical Details of CVE-2018-10519

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from the accessibility of files in the tmp/ directory through HTTP requests, enabling users to manipulate the eff_uid value within $_COOKIE[$this->_loginkey] to elevate their privileges.

Affected Systems and Versions

Affected System: CMS Made Simple (CMSMS) 2.2.7
Affected Version: 2.2.7

Exploitation Mechanism

The exploit involves setting the eff_uid value within $_COOKIE[$this->_loginkey] to 1, granting unauthorized users admin privileges.

Mitigation and Prevention

Protecting systems from CVE-2018-10519 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable access to the tmp/ directory via HTTP requests.
Regularly monitor and audit user privileges and activities.

Long-Term Security Practices

Implement least privilege access controls.
Conduct regular security assessments and penetration testing.

Patching and Updates

Apply patches and updates provided by CMS Made Simple to address the vulnerability.