CVE-2016-2408 in Secure Desktop
Summary
by MITRE
Pulse Secure Desktop before 5.2R2 and Pulse Secure Installer Service before 8.2R2 and below for Windows allow restricted users to gain privileges via unspecified vectors.
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Analysis
by VulDB Data Team • 09/09/2022
The vulnerability identified as CVE-2016-2408 affects Pulse Secure Desktop client software versions prior to 5.2R2 and Pulse Secure Installer Service versions before 8.2R2 on Windows platforms. This security flaw represents a privilege escalation vulnerability that allows restricted users to elevate their access privileges within the system. The vulnerability stems from insufficient access controls and privilege management mechanisms within the Pulse Secure client installation and execution processes, creating opportunities for unauthorized users to exploit the system's permission model. The unspecified vectors suggest that the vulnerability could be triggered through multiple attack paths, potentially involving manipulation of installation processes, service execution contexts, or user privilege handling within the Pulse Secure framework.
The technical implementation of this vulnerability involves the exploitation of weak privilege boundaries within the Pulse Secure Desktop application and its associated installer service components. Restricted users typically operate with limited system privileges but can leverage this flaw to execute malicious code with elevated permissions. The vulnerability likely resides in how the software handles user authentication contexts, service startup procedures, or file system access controls during the installation or execution phases. Attackers could potentially manipulate installation parameters, exploit service interaction flaws, or manipulate system components that should normally be restricted to privileged users. This weakness in privilege management creates a pathway for lateral movement and system compromise that could lead to complete system takeover.
The operational impact of CVE-2016-2408 extends beyond simple privilege escalation to encompass broader security implications for organizations relying on Pulse Secure for remote access solutions. When exploited, this vulnerability allows attackers to gain unauthorized access to network resources, potentially leading to data breaches, system compromise, and unauthorized network access. The vulnerability affects organizations that deploy Pulse Secure Desktop for remote access management, making it particularly concerning for enterprises with distributed workforce environments. The impact is amplified because Pulse Secure is commonly used for VPN connections and remote desktop access, meaning that successful exploitation could provide attackers with persistent access to corporate networks. Organizations may face regulatory compliance issues and potential legal consequences if sensitive data is accessed through this vulnerability.
Mitigation strategies for CVE-2016-2408 should focus on immediate software updates to versions 5.2R2 or later for Pulse Secure Desktop and 8.2R2 or later for Pulse Secure Installer Service. Organizations should implement strict access controls and privilege management policies to limit user permissions where possible, following the principle of least privilege. Network segmentation and monitoring should be enhanced to detect anomalous behavior that might indicate exploitation attempts. The vulnerability aligns with CWE-276, which addresses improper privileges, and relates to ATT&CK technique T1068, which covers exploit for privilege escalation. Security teams should also consider implementing application whitelisting policies to prevent unauthorized execution of potentially malicious code. Regular vulnerability assessments and penetration testing should be conducted to identify similar privilege escalation vulnerabilities within the organization's broader software ecosystem, as this type of flaw often indicates broader architectural weaknesses in privilege management systems.