CVE-2024-3387 in PAN-OS
Summary
by MITRE • 04/10/2024
A weak (low bit strength) device certificate in Palo Alto Networks Panorama software enables an attacker to perform a meddler-in-the-middle (MitM) attack to capture encrypted traffic between the Panorama management server and the firewalls it manages. With sufficient computing resources, the attacker could break encrypted communication and expose sensitive information that is shared between the management server and the firewalls.
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Analysis
by VulDB Data Team • 01/31/2026
This vulnerability resides in the Palo Alto Networks Panorama management software where a weak cryptographic certificate with insufficient bit strength creates a critical security gap that enables man-in-the-middle attacks. The flaw specifically affects the device certificates used for secure communication between the Panorama management server and the firewalls it oversees, fundamentally undermining the integrity of the encrypted communication channel. The vulnerability stems from the use of cryptographic keys that do not meet modern security standards, making them susceptible to computational attacks that can compromise the encryption used for traffic between management and managed devices.
The technical implementation of this weakness allows an attacker positioned within the network to intercept and manipulate communications between the Panorama server and firewalls without detection. This occurs because the certificate's low bit strength makes it vulnerable to cryptographic attacks that can potentially reverse the encryption algorithms used for securing the management communications. The attack vector requires the adversary to have network access and sufficient computational resources to perform the necessary cryptographic analysis to break the weak certificate, which can then be used to establish fraudulent communication channels that appear legitimate to both the management server and the firewalls.
The operational impact of this vulnerability is severe as it allows attackers to capture and potentially decrypt sensitive traffic flowing between the Panorama management server and managed firewalls. This includes configuration data, policy updates, logs, and potentially sensitive operational information that flows through these communication channels. The exposure of such data can lead to complete compromise of the network security posture, as attackers gain visibility into firewall configurations, security policies, and operational details that would otherwise remain protected. This vulnerability directly violates the principles of confidentiality and integrity as outlined in the CIA triad, allowing unauthorized access to critical network infrastructure management communications.
The attack scenario begins with an adversary identifying the weak certificate within the Panorama environment, followed by leveraging computational resources to perform cryptographic attacks against the insufficient bit strength. Once successful, the attacker can establish fraudulent communication channels that appear legitimate to both management and managed devices, enabling them to capture, modify, or redirect traffic between the components. This vulnerability aligns with attack techniques documented in the ATT&CK framework under credential access and defense evasion tactics, particularly focusing on the compromise of cryptographic systems and the establishment of persistent communication channels that bypass normal security controls.
Organizations should immediately implement certificate rotation procedures to replace the weak certificates with ones that meet current cryptographic standards, typically requiring at least 2048-bit RSA keys or equivalent elliptic curve cryptography. Network segmentation and monitoring should be enhanced to detect unusual communication patterns between management and managed devices, while implementing additional authentication mechanisms that do not rely solely on certificate-based encryption. Regular cryptographic assessments should be conducted to ensure all certificates meet current security requirements, and vendors should be monitored for patches that address the specific certificate strength issues identified in this vulnerability. The remediation process should include comprehensive testing of certificate replacements to ensure continued functionality while strengthening the cryptographic foundation of the management infrastructure. This vulnerability demonstrates the critical importance of maintaining up-to-date cryptographic standards as outlined in industry frameworks such as NIST SP 800-57 and ISO/IEC 15408, where weak cryptographic implementations can create fundamental security weaknesses that undermine entire security architectures.