CVE-2024-5908 is a vulnerability classified under CWE-532, which pertains to the insertion of sensitive information into log files. In this case, the Palo Alto Networks GlobalProtect App, a widely used VPN client, inadvertently logs encrypted user credentials used for VPN authentication within its application logs. These logs are typically accessible only to local users on the device but are often collected and shared for troubleshooting purposes. The presence of encrypted credentials in logs increases the risk that sensitive authentication data could be exposed to unauthorized parties if logs are mishandled or transmitted insecurely. The vulnerability affects multiple versions of the GlobalProtect App (5.1.0, 6.0.0, 6.1.0, and 6.2.0). According to the CVSS 4.0 vector, the attack vector is network-based, with low attack complexity, no privileges required, but user interaction is necessary. The vulnerability impacts confidentiality primarily, with limited impact on integrity and availability. There are no known exploits in the wild at this time, and no official patches have been linked yet. The vulnerability was published on June 12, 2024, and is currently rated as medium severity with a CVSS score of 5.5.

The primary impact of CVE-2024-5908 is the potential exposure of encrypted VPN credentials through application logs. If these logs are accessed by unauthorized users or shared externally during troubleshooting, attackers could gain access to sensitive authentication data. Although the credentials are encrypted, their exposure increases the risk of offline cryptanalysis or credential replay attacks, potentially leading to unauthorized VPN access. This could compromise the confidentiality of corporate networks and sensitive data accessed via GlobalProtect VPN. The vulnerability does not directly affect system integrity or availability but poses a significant confidentiality risk. Organizations relying on GlobalProtect for secure remote access could face increased risk of credential theft and subsequent network intrusion if logs are not properly secured. The risk is heightened in environments where logs are aggregated or transmitted to external support teams without adequate protection.

Organizations should immediately review and restrict access to GlobalProtect application logs to trusted local users only, ensuring logs are not shared externally unless sanitized. Avoid transmitting raw logs containing sensitive information over insecure channels. Implement strict access controls and encryption for log storage and transmission. Monitor for unusual access patterns to logs and VPN authentication systems. Until Palo Alto Networks releases an official patch, consider disabling verbose logging features that capture sensitive credential data if feasible. Educate support and IT teams about the sensitivity of these logs to prevent accidental exposure. Regularly update GlobalProtect App to the latest versions once patches addressing this vulnerability are available. Additionally, consider implementing multi-factor authentication (MFA) on VPN access to mitigate risks from potential credential compromise.