CVE-2025-0137 in Cloud NGFW
Summary
by MITRE • 05/14/2025
An improper input neutralization vulnerability in the management web interface of the Palo Alto Networks PAN-OS® software enables a malicious authenticated read-write administrator to impersonate another legitimate authenticated PAN-OS administrator.
The attacker must have network access to the management web interface to exploit this issue. You greatly reduce the risk of this issue by restricting access to the management web interface to only trusted internal IP addresses according to our recommended critical deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
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Analysis
by VulDB Data Team • 05/15/2025
This vulnerability represents a critical authorization flaw in Palo Alto Networks PAN-OS software that undermines the integrity of administrative access controls. The improper input neutralization weakness exists within the management web interface component, allowing authenticated users with read-write privileges to exploit a path traversal or session manipulation mechanism. The vulnerability specifically affects the authentication and authorization framework that governs administrator impersonation capabilities, creating a scenario where a malicious actor can escalate their privileges to assume the identity of other legitimate administrators. This type of flaw directly violates the principle of least privilege and can lead to complete administrative control over the network security infrastructure. The vulnerability aligns with CWE-20, which describes improper input validation, and specifically relates to CWE-305, which addresses authentication bypass through improper input neutralization. According to the ATT&CK framework, this vulnerability maps to T1078.004 - Valid Accounts: Cloud Accounts and T1566.001 - Phishing: Spearphishing Attachment, as it enables an attacker to leverage existing administrative credentials through manipulation of the authentication interface.
The technical exploitation of this vulnerability requires an attacker to possess valid administrative credentials with read-write permissions, along with network access to the PAN-OS management interface. This means the attack vector is constrained to environments where the management interface is accessible over the network, typically through dedicated management interfaces or VPN connections. The flaw likely involves insufficient sanitization of user inputs when processing administrator session data or authentication tokens, allowing malicious input to be interpreted as legitimate administrative commands. The vulnerability's impact extends beyond simple privilege escalation, as successful exploitation could enable attackers to modify firewall rules, access sensitive network data, and potentially compromise the entire security infrastructure. The risk is particularly elevated in environments where administrative access is not properly segmented or where multiple administrators share similar credentials or access patterns. Organizations utilizing PAN-OS in cloud environments or those with complex network topologies may face additional exposure due to the potential for lateral movement through compromised administrative sessions.
The operational implications of this vulnerability are severe and multifaceted across enterprise security operations. Successful exploitation could result in complete administrative takeover of the PAN-OS device, enabling attackers to modify security policies, create backdoors, and potentially establish persistent access to the network infrastructure. This vulnerability undermines the trust model that organizations rely upon for their network security systems, as it allows attackers to impersonate legitimate users within the administrative domain. The impact extends to compliance requirements, as organizations may fail to meet regulatory standards for access control and audit logging when such vulnerabilities exist. Security teams would face challenges in detecting unauthorized administrative activities, as the impersonation would appear to originate from legitimate administrative accounts. The vulnerability also impacts incident response procedures, as forensic analysis of security events becomes complicated when administrative actions cannot be clearly attributed to specific legitimate users. Organizations may experience significant operational disruption if attackers use this vulnerability to modify critical security policies or disable monitoring capabilities.
Organizations should implement immediate mitigations to address this vulnerability through network segmentation and access control measures. The primary recommendation involves restricting management interface access to trusted internal IP addresses and implementing strict network access controls as outlined in Palo Alto Networks' critical deployment guidelines. Additional mitigations include implementing multi-factor authentication for administrative access, regularly auditing administrative sessions, and monitoring for anomalous administrative activities. Network segmentation should isolate management interfaces from general network traffic, and organizations should consider implementing dedicated management networks with strict access controls. The implementation of role-based access controls and regular credential rotation can further reduce the risk of exploitation. Organizations should also ensure that administrative access is logged and monitored through centralized security information and event management systems. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues. The vulnerability highlights the importance of secure coding practices in authentication systems and the need for comprehensive input validation mechanisms. Organizations should also consider implementing automated patch management processes to ensure timely deployment of security updates and mitigate similar vulnerabilities in other network security components.