CVE-2016-9150 in PAN-OS
Summary
by MITRE
Buffer overflow in the management web interface in Palo Alto Networks PAN-OS before 5.0.20, 5.1.x before 5.1.13, 6.0.x before 6.0.15, 6.1.x before 6.1.15, 7.0.x before 7.0.11, and 7.1.x before 7.1.6 allows remote attackers to execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 10/24/2024
The vulnerability identified as CVE-2016-9150 represents a critical buffer overflow flaw within the management web interface of Palo Alto Networks PAN-OS software versions prior to specific patch releases. This issue affects multiple major version branches including 5.0.x, 5.1.x, 6.0.x, 6.1.x, 7.0.x, and 7.1.x, creating widespread exposure across the Palo Alto Networks product portfolio. The buffer overflow occurs in the web interface component responsible for processing incoming requests, making it a prime target for remote exploitation by malicious actors. The vulnerability's severity is amplified by its accessibility through the network management interface, which typically requires minimal privileges to access and can be targeted from external networks.
The technical implementation of this buffer overflow stems from inadequate input validation and memory management within the web application layer of PAN-OS. Attackers can exploit this weakness by crafting malicious requests that exceed the allocated buffer space, causing memory corruption that can be leveraged to execute arbitrary code on the affected device. This type of vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of how improper bounds checking can lead to complete system compromise. The unspecified vectors mentioned in the description suggest that the attack surface encompasses multiple input points within the web interface, making the vulnerability particularly challenging to defend against through simple network segmentation or access control measures.
The operational impact of CVE-2016-9150 extends far beyond simple code execution, as successful exploitation can result in complete device compromise, data exfiltration, and potential lateral movement within network environments. Organizations relying on Palo Alto Networks firewalls for network security can face catastrophic consequences when this vulnerability is exploited, as attackers gain administrative control over critical network infrastructure. The remote nature of the attack means that adversaries do not require physical access or local network credentials to exploit the vulnerability, making it particularly dangerous for organizations with exposed management interfaces. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1059 for command and script execution, and T1071 for application layer protocol usage, as attackers can leverage the compromised device to conduct further reconnaissance and attack activities.
Organizations must prioritize immediate remediation of this vulnerability through the application of official patches released by Palo Alto Networks, specifically targeting the affected version ranges mentioned in the CVE description. The patching process should include comprehensive testing in non-production environments to ensure compatibility with existing network configurations and applications. Network segmentation strategies should be implemented to limit exposure of management interfaces to trusted networks only, while implementing additional monitoring for unusual traffic patterns that might indicate exploitation attempts. Security teams should also consider deploying intrusion detection systems capable of identifying attack patterns associated with buffer overflow exploitation attempts, and establish incident response procedures specifically addressing this vulnerability. The vulnerability highlights the critical importance of maintaining current security patches and implementing robust security monitoring practices to prevent exploitation of known vulnerabilities in network infrastructure components.