CVE-2017-18213 in Exponent
Summary
by MITRE
In Exponent CMS before 2.4.1 Patch #6, certain admin users can elevate their privileges.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 02/16/2023
The vulnerability identified as CVE-2017-18213 affects Exponent CMS versions prior to 2.4.1 Patch #6, representing a critical privilege escalation flaw that allows certain administrative users to gain elevated system access. This issue stems from insufficient access control mechanisms within the content management system's user permission handling, creating a pathway for unauthorized privilege elevation that could compromise the entire administrative framework.
The technical flaw manifests in the CMS's insufficient validation of user roles and permissions during administrative operations. Specifically, the vulnerability occurs when certain admin users with limited privileges attempt to perform actions that should require higher-level administrative rights. The system fails to properly verify whether the requesting user possesses adequate authorization levels, allowing malicious or compromised accounts to exploit this gap and assume elevated privileges. This type of vulnerability aligns with CWE-284, which categorizes improper access control issues, and represents a classic example of insufficient privilege checking in web applications.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it creates a potential gateway for broader system compromise. An attacker who successfully exploits this flaw could gain access to sensitive administrative functions including user management, content modification, system configuration changes, and potentially database access. The vulnerability affects the integrity and confidentiality of the entire CMS environment, as elevated privileges would allow for unauthorized data manipulation, user account compromise, and system configuration alterations that could persist even after the initial exploitation attempt.
Organizations running affected Exponent CMS versions face significant risk exposure, particularly in environments where administrative accounts are compromised or where insider threats exist. The vulnerability could be exploited through various attack vectors including credential theft, session hijacking, or by targeting users with administrative roles who may not be properly secured. According to ATT&CK framework, this vulnerability maps to privilege escalation techniques under the T1068 category, specifically targeting the exploitation of weak access control mechanisms. The attack surface is particularly concerning given that many organizations rely on CMS platforms for their primary content management and web presence, making such vulnerabilities attractive targets for cybercriminals seeking persistent access to web infrastructure.
The recommended mitigation strategy involves immediate implementation of the vendor-provided patch version 2.4.1 Patch #6, which addresses the specific access control validation issue. Organizations should also conduct comprehensive security assessments of their administrative user accounts, implement multi-factor authentication for all administrative access, and establish regular privilege reviews to ensure that administrative rights are properly allocated and monitored. Additionally, network segmentation and monitoring solutions should be deployed to detect unusual administrative activities that might indicate exploitation attempts. Security teams should also consider implementing automated patch management processes to ensure timely deployment of security updates and reduce the window of vulnerability exposure.