CVE-2024-5913 in PAN-OS
Summary
by MITRE • 07/10/2024
An improper input validation vulnerability in Palo Alto Networks PAN-OS software enables an attacker with the ability to tamper with the physical file system to elevate privileges.
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Analysis
by VulDB Data Team • 08/06/2024
The vulnerability identified as CVE-2024-5913 represents a critical improper input validation flaw within Palo Alto Networks PAN-OS software that directly compromises system integrity and privilege escalation capabilities. This weakness exists in the software's handling of file system operations and input validation mechanisms, creating an exploitable condition that allows attackers with physical access or file system manipulation capabilities to elevate their privileges. The vulnerability stems from insufficient validation of user-supplied inputs during file system interactions, which can be manipulated to bypass security controls and gain unauthorized administrative access to the network security appliance.
The technical implementation of this vulnerability demonstrates a classic path to privilege escalation through file system manipulation. Attackers can exploit the improper input validation by crafting specific file system operations that circumvent the normal access controls and authentication mechanisms. This flaw typically manifests when the system processes file paths, directory structures, or file operations without adequate sanitization of input parameters. The vulnerability allows for arbitrary file system modifications that can be leveraged to inject malicious code, modify system files, or alter configuration settings that control access permissions. The lack of proper input validation creates a direct attack vector where malicious inputs can be interpreted as legitimate system commands or file operations.
The operational impact of CVE-2024-5913 extends beyond simple privilege escalation to encompass potential complete system compromise and unauthorized network access. Organizations utilizing Palo Alto Networks firewalls and security appliances become vulnerable to attackers who can leverage physical access or file system manipulation capabilities to gain root-level privileges. This vulnerability undermines the core security model of network appliances by allowing attackers to bypass the device's built-in security controls and access sensitive network infrastructure. The implications include potential data exfiltration, network disruption, and the ability to establish persistent access points within the network environment. The attack surface is particularly concerning for organizations that rely heavily on PAN-OS for perimeter security and network segmentation.
Security professionals should implement immediate mitigations including patching the affected PAN-OS versions, implementing robust input validation controls, and establishing monitoring for unusual file system activities. Organizations must also review their physical security controls to prevent unauthorized access to network appliances, as this vulnerability requires either physical access or the ability to manipulate the file system. The mitigation strategy should include comprehensive network monitoring for file system modifications, implementation of file integrity checking mechanisms, and regular security assessments of network infrastructure. Additionally, organizations should consider implementing network segmentation and access controls that limit the potential impact of such vulnerabilities. This vulnerability aligns with CWE-20, which describes improper input validation, and represents a significant concern under ATT&CK framework's privilege escalation techniques, specifically targeting the T1068 and T1548 sub-techniques related to local privilege escalation and abuse of privileges.