CVE-2025-0109 in Cloud NGFW
Summary
by MITRE • 02/12/2025
An unauthenticated file deletion vulnerability in the Palo Alto Networks PAN-OS management web interface enables an unauthenticated attacker with network access to the management web interface to delete certain files as the “nobody” user; this includes limited logs and configuration files but does not include system files.
You can 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 best practices deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue does not affect Cloud NGFW or Prisma Access software.
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Analysis
by VulDB Data Team • 02/12/2025
The vulnerability identified as CVE-2025-0109 represents a critical unauthenticated file deletion flaw within the Palo Alto Networks PAN-OS management web interface. This security weakness allows attackers without authentication credentials to exploit network access to the management interface and perform unauthorized file deletion operations. The vulnerability specifically targets the "nobody" user context, which limits the scope of affected files to certain logs and configuration files rather than system-critical components. However, the potential impact remains significant as configuration files often contain sensitive operational data and network security policies that could compromise the overall security posture when deleted or modified.
The technical implementation of this vulnerability stems from insufficient access controls and authentication mechanisms within the web interface management components of PAN-OS. Attackers can leverage this weakness through network-based exploitation without requiring valid credentials, making it particularly dangerous in environments where management interfaces are accessible from untrusted networks. The vulnerability manifests as a lack of proper authorization checks when processing file deletion requests, allowing arbitrary file removal operations to be executed by unauthorized users. This flaw aligns with CWE-284, which addresses improper access control in software systems, and represents a classic example of insufficient authorization validation in web applications.
Operationally, the impact of CVE-2025-0109 extends beyond simple file deletion as it can disrupt network security operations and potentially enable further attacks. The deletion of configuration files may result in service disruption, loss of security policies, and compromised network visibility. Logs deletion could impede forensic analysis and security monitoring capabilities, while configuration file corruption might lead to unexpected behavior in network security policies. This vulnerability also creates opportunities for attackers to establish persistence or conduct more sophisticated attacks by removing evidence of their activities. According to ATT&CK framework, this vulnerability maps to T1485 - Data Destruction and T1566 - Phishing, as attackers could use the deletion capabilities to cover their tracks or create conditions for additional attacks.
The security implications of this vulnerability are particularly concerning given that it affects the management interface of network security appliances, which are critical components of enterprise security infrastructure. Organizations relying on PAN-OS for their network security may experience significant operational disruption if attackers successfully exploit this vulnerability. The issue does not impact Cloud NGFW or Prisma Access software, indicating that the vulnerability is specific to the traditional on-premises PAN-OS deployments. This limitation suggests that cloud-based implementations may have additional security controls or different architectural approaches that mitigate this particular weakness.
The recommended mitigation strategy emphasizes network segmentation and access control restrictions, specifically advising organizations to limit management interface access to trusted internal IP addresses only. This approach aligns with the principle of least privilege and network segmentation best practices. The suggested deployment guidelines from Palo Alto Networks provide a comprehensive framework for securing management access, including implementing strict firewall rules, using VPN access controls, and establishing monitoring for unauthorized access attempts. Additional mitigations include implementing multi-factor authentication for management access, regular security audits of management interface configurations, and maintaining comprehensive backup strategies for critical configuration files. Organizations should also consider implementing network monitoring solutions that can detect anomalous file deletion activities and alert security teams to potential exploitation attempts. The vulnerability underscores the importance of maintaining strict access controls for management interfaces and demonstrates how seemingly minor access control flaws can have significant operational consequences in security infrastructure components.