Palo Alto Networks has confirmed that some of its next-generation firewalls running the PAN-OS operating system are experiencing unexpected reboots. The issue is linked to certain older versions of PAN-OS, which can crash when handling specific traffic conditions. To address this, the company released hotfix 11.1.4-h12 with limited availability on January 31.
The affected devices are those running versions 11.1.4-h7/h9 of the operating system. Palo Alto Networks is also working on validating an unrelated regression fix in hotfix 11.1.4-h13, which they expect to release publicly by February 20. They have stated that only a very small number of customers have been impacted by this reboot issue. Those who believe they are affected are encouraged to contact support for guidance on applying the hotfix.
Details about the root cause of the problem remain undisclosed for security reasons, but the company emphasized the importance of reaching out to their support teams for assistance with specific issues. This matter gained attention after users reported the problem on a Reddit forum, with some mentioning that their firewalls rebooted unexpectedly, particularly when SSL interception was enabled.
Expert opinions suggest that the issue appears to be a software bug rather than a result of a cyber attack. One expert noted that firewalls might reboot due to low system resources or specific packets triggering denial of service conditions. Separately, researchers reported that Palo Alto Networks firewalls had longstanding UEFI firmware vulnerabilities that could potentially be exploited, emphasizing the importance of firmware security in protecting devices against threats.
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