CVE-2024-3385: PAN-OS: Firewall Denial of Service (DoS) when GTP Security is Disabled
A packet processing mechanism in Palo Alto Networks PAN-OS software enables a remote attacker to reboot hardware-based firewalls. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online.
This affects the following hardware firewall models:
- PA-5400 Series firewalls
- PA-7000 Series firewalls
Security readout for executives and security teams
Plain-English summary
This vulnerability can let an unauthenticated remote attacker crash certain Palo Alto Networks hardware firewalls. Repeated attacks can force the firewall into maintenance mode, requiring manual recovery. The business risk is loss of firewall availability, not data theft or system takeover based on the provided sources.
Executive priority
Treat this as a high-priority availability risk for affected perimeter firewalls. It does not indicate confirmed data compromise, but disruption could be serious because repeated attacks may require hands-on recovery before network protection returns.
Technical view
CVE-2024-3385 is a PAN-OS packet processing flaw affecting PA-5400 and PA-7000 Series hardware firewalls when GTP Security is disabled. The CVSS 3.1 score is 7.5 with network attack vector, low complexity, no privileges, no user interaction, and high availability impact. Listed weaknesses are CWE-20 and CWE-476.
Likely exposure
Exposure appears limited to Palo Alto Networks PA-5400 and PA-7000 Series hardware firewalls running affected PAN-OS branches. The bundle lists Cloud NGFW and Prisma Access as unaffected. The provided evidence does not define exact fixed releases or deployment prerequisites beyond GTP Security being disabled.
Exploitation context
The source bundle does not cite active exploitation, and KEV status is false. The attack is remote, unauthenticated, and availability-focused. Repeated attacks can move devices into maintenance mode, increasing operational impact because manual intervention is required to restore service.
Researcher notes
Evidence is sufficient for impact, affected hardware families, CVSS vector, and non-affected cloud products. It is incomplete for exact fixed releases, exploit-in-the-wild status beyond KEV=false, and detailed mitigations. Avoid assuming broader PAN-OS exposure without vendor confirmation.
Mitigation direction
Inventory PA-5400 and PA-7000 Series firewalls running affected PAN-OS branches.
Check Palo Alto Networks guidance for fixed releases or official mitigations.
Review whether GTP Security is disabled on affected hardware firewalls.
Prioritize remediation for internet-facing or high-traffic perimeter firewalls.
Prepare manual recovery procedures for maintenance-mode firewall events.
Validation and detection
Confirm device model, PAN-OS branch, and GTP Security configuration.
Verify Cloud NGFW and Prisma Access assets are excluded from remediation scope.
Review firewall logs for unexplained reboots or maintenance-mode transitions.
Check vendor advisory for affected and fixed version details.
Validate operational runbooks cover firewall reboot and manual recovery scenarios.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · low confidence lookup
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-20 · source CWE mapping
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.