Actively exploited in the wild
Palo Alto Networks PAN-OS Reflected Amplification Denial-of-Service Vulnerability
Palo Alto Networks - PAN-OS · Listed in the CISA KEV since 2022-08-22. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2022-0028
HighCVSS 8.6KEVSummary
A PAN-OS URL filtering policy misconfiguration could allow a network-based attacker to conduct reflected and amplified TCP denial-of-service (RDoS) attacks. The attack would appear to originate from a Palo Alto Networks PA-Series, VM-Series, or CN-Series firewall against an attacker-specified target. This requires a URL filtering profile with blocked categories assigned to a source zone with an external facing interface.
Risk Assessment
The vulnerability could be exploited to conduct DoS attacks that may obfuscate the attacker's identity and implicate the firewall as the attack source. It does not impact confidentiality, integrity, or availability of products but may have reputational repercussions.
Recommendation
Update PAN-OS software to the latest version that fixes this vulnerability. Review URL filtering configuration and remove unnecessary blocked categories in external zones.
Other vulnerabilities in Palo Alto Networks PAN-OS
See all- CVE-2017-15942High
Palo Alto Networks PAN-OS versions before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.13, and 8.0.x before 8.0.6 allow remote attackers to cause a denial of service via vectors related to the management interface.
- CVE-2017-7218High
The Management Web Interface in Palo Alto Networks PAN-OS before 7.1.9 allows remote authenticated users to gain privileges via unspecified request parameters.
- CVE-2016-9151High
Palo Alto Networks PAN-OS versions before 5.0.20, 5.1.x before 5.1.13, 6.0.x before 6.0.15, 6.1.x before 6.1.15, 7.0.x before 7.0.11, and 7.1.x before 7.1.6 allow local users to gain privileges via crafted values of unspecified environment variables.
- CVE-2016-1712High
Palo Alto Networks PAN-OS versions before 5.0.19, 5.1.x before 5.1.12, 6.0.x before 6.0.14, 6.1.x before 6.1.12, and 7.0.x before 7.0.8 may allow local users to gain privileges by leveraging improper sanitization of the root_reboot local invocation.
- CVE-2016-3654High
The device management command line interface (CLI) in Palo Alto Networks PAN-OS before version 5.0.18 and in versions 5.1.x before 5.1.11, 6.0.x before 6.0.13, 6.1.x before 6.1.10, and 7.0.x before 7.0.5H2 allows remote authenticated administrators to execute arbitrary OS commands via an SSH command parameter.
- CVE-2026-0284Critical
An XML injection vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS software allows an unauthenticated attacker with network access to inject malicious XML content, potentially leading to information disclosure or corruption of internal LSVPN satellite data. Panorama, Cloud NGFW, and Prisma Access are not affected by this vulnerability.
- CVE-2024-3393HighActively exploited
A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.
- CVE-2024-3400CriticalActively exploited
In Palo Alto Networks PAN-OS GlobalProtect feature, a command injection vulnerability due to arbitrary file creation exists. An unauthenticated attacker can execute arbitrary code with root privileges on the firewall.
- CVE-2017-15940Critical
The web interface packet capture management component in Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote authenticated users to execute arbitrary code via unspecified vectors.
- CVE-2016-9150Critical
Buffer overflow in the management web interface in Palo Alto Networks PAN-OS before version 5.0.20, 5.1.x before 5.1.13, 6.0.x before 6.0.15, 6.1.x before 6.1.15, 7.0.x before 7.0.11, and 7.1.x before 7.1.6 allows remote attackers to execute arbitrary code.
Original NVD description (English source)
A PAN-OS URL filtering policy misconfiguration could allow a network-based attacker to conduct reflected and amplified TCP denial-of-service (RDoS) attacks. The DoS attack would appear to originate from a Palo Alto Networks PA-Series (hardware), VM-Series (virtual) and CN-Series (container) firewall against an attacker-specified target. To be misused by an external attacker, the firewall configuration must have a URL filtering profile with one or more blocked categories assigned to a source zone that has an external facing interface. This configuration is not typical for URL filtering and, if set, is likely unintended by the administrator. If exploited, this issue would not impact the confidentiality, integrity, or availability of our products. However, the resulting denial-of-service (DoS) attack may help obfuscate the identity of the attacker and implicate the firewall as the source of the attack. We have taken prompt action to address this issue in our PAN-OS software. All software updates for this issue are expected to be released no later than the week of August 15, 2022. This issue does not impact Panorama M-Series or Panorama virtual appliances. This issue has been resolved for all Cloud NGFW and Prisma Access customers and no additional action is required from them.