CVE-2012-6594 in PAN-OS
Summary
by MITRE
The device-management command-line interface in Palo Alto Networks PAN-OS before 3.1.11, 4.0.x before 4.0.8, and 4.1.x before 4.1.1 allows remote authenticated administrators to execute arbitrary commands via unspecified vectors, aka Ref ID 34299.
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Analysis
by VulDB Data Team • 10/06/2018
The vulnerability identified as CVE-2012-6594 represents a critical remote command execution flaw within the device-management command-line interface of Palo Alto Networks PAN-OS software. This vulnerability affects multiple versions of the firewall operating system, specifically targeting PAN-OS versions prior to 3.1.11, 4.0.8, and 4.1.1, creating a significant security risk for organizations relying on Palo Alto firewalls for network protection. The flaw enables authenticated administrators to execute arbitrary commands remotely, fundamentally undermining the security model of the device management interface. The vulnerability operates through unspecified vectors that allow privilege escalation within the command-line environment, potentially enabling attackers with valid administrative credentials to gain unauthorized control over the firewall's underlying system.
The technical nature of this vulnerability aligns with CWE-78, which describes improper neutralization of special elements used in OS commands, and CWE-20, which addresses input validation issues. The flaw exists within the command-line interface processing logic where user inputs are not properly sanitized or validated before being executed as system commands. This creates a path for command injection attacks where malicious input can be interpreted and executed by the underlying operating system. The vulnerability's impact is amplified by the fact that it requires only authenticated access, meaning that an attacker who has already obtained valid administrative credentials can leverage this flaw to escalate privileges or execute arbitrary code on the firewall system. The unspecified vectors suggest that the vulnerability may be present in multiple code paths within the CLI processing module, making it particularly challenging to fully understand and remediate.
From an operational perspective, this vulnerability poses severe risks to network security infrastructure as it allows attackers to execute arbitrary commands on firewall systems that are typically considered secure administrative endpoints. The implications extend beyond simple privilege escalation, as successful exploitation could enable attackers to modify firewall rules, disable security features, access network traffic, or even compromise the entire network infrastructure. Organizations with multiple Palo Alto firewalls across their network may face widespread compromise if this vulnerability is exploited, as the same flaw exists across different PAN-OS version lines. The remote execution capability means that attackers do not need physical access to the device, making it particularly dangerous in environments where network segmentation is not properly implemented. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1059 for command and scripting interpreter, and T1068 for exploit for privilege escalation.
The recommended mitigation strategy involves immediate deployment of the vendor patches released for PAN-OS versions 3.1.11, 4.0.8, and 4.1.1, which address the command injection vulnerability in the device management interface. Organizations should implement comprehensive network monitoring to detect potential exploitation attempts and establish strict access controls for administrative accounts. Additional security measures include enabling multi-factor authentication for administrative access, implementing network segmentation to isolate management interfaces, and conducting regular security assessments of firewall configurations. The vulnerability also underscores the importance of maintaining up-to-date security patches and implementing proper security monitoring procedures to detect anomalous command execution patterns within firewall management systems. Organizations should also consider implementing privileged access management solutions to reduce the attack surface and ensure that administrative access is properly controlled and audited.