CVE-2019-11539: High Vulnerability in Ivanti Pulse Connect Secure and Pulse Policy Secure

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX before 5.4R7.1, 5.3RX before 5.3R12.1, 5.2RX before 5.2R12.1, and 5.1RX before 5.1R15.1, the admin web interface allows an authenticated attacker to inject and execute commands.

This vulnerability, classified as high severity with a CVSS score of 7.2, poses significant risks to organizations. Attackers may leverage this vulnerability to gain control over affected systems, potentially leading to unauthorized access and data breaches.

Organizations should prioritize patching immediately. The vulnerability is actively exploited, as confirmed by its inclusion in the Known Exploited Vulnerabilities (KEV) catalog, necessitating urgent action from security teams.

The potential impact includes compromised confidentiality, integrity, and availability of organizational data, making timely remediation essential.

Vulnerability Details

The official description states that the vulnerability allows authenticated attackers to execute commands via the admin web interface, which can lead to severe consequences for the affected systems.

The CVSS score of 7.2 indicates a high severity level, which means organizations need to prioritize this vulnerability in their patch management cycle.

The affected products include Ivanti's Pulse Connect Secure and Pulse Policy Secure across multiple versions, as detailed in the CVE database.

Technical Analysis

The root cause of this vulnerability lies in insufficient input validation in the admin web interface, which allows command injection by an authenticated user. The attack vector is primarily network-based, requiring low attack complexity, and high privileges are needed for exploitation.

No user interaction is required, making this vulnerability particularly dangerous. Confidentiality, integrity, and availability impacts are all rated high.

Risk & Impact Analysis

Risk to organizations includes the potential for unauthorized access to sensitive data and system control. Given the high CVSS score and confirmed active exploitation, this vulnerability presents a significant risk to enterprise environments.

Organizations should conduct a thorough assessment of their exposure and prioritize remediation efforts based on the critical nature of this vulnerability.

Exploitation Status

Affected Versions

Affected versions for the Pulse Secure products include multiple releases of Pulse Connect Secure and Pulse Policy Secure, specifically versions prior to the vendor patches listed in the CVE details.

Mitigation & Remediation

Organizations should apply updates per vendor instructions to remediate this vulnerability. For those unable to patch immediately, implementing network segmentation and monitoring for unusual activity can help mitigate risk.

For further information on effective penetration testing strategies, organizations can refer to the penetration testing offered by AppSecure.

Detection Guidance

Organizations should monitor logs for indicators of compromise and look for behavioral anomalies that could suggest exploitation of this vulnerability. Network signatures that identify unusual admin web interface activity should also be established.

AppSecure Threat Intelligence Insight

This vulnerability exemplifies the ongoing challenges organizations face with maintaining secure configurations in web interfaces, especially for administrative roles. Security teams should be vigilant in applying best practices for input validation and regularly auditing their configurations.

To enhance security posture, teams can explore resources on vulnerability management and consider enrolling in penetration testing methodologies to proactively address vulnerabilities.

Furthermore, understanding the trends in ransomware attacks can help organizations prepare against future threats.