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CVE-2022-0028— PAN-OS: Reflected Amplification Denial-of-Service (DoS) Vulnerability in URL Filtering

Quick assessment

Affected
Palo Alto Networks Cloud NGFW
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Palo Alto Networks PAN-OS是Palo Alto Networks的一款下一代防火墙软件。 Palo Alto Networks PAN-OS URL存在安全漏洞，该漏洞源于过滤策略配置错误。攻击者利用该漏洞执行拒绝服务攻击。

CVSS 8.6 · High KEV EPSS 2.54% · P85
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I. Basic Information for CVE-2022-0028

Vulnerability Information
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Vulnerability Title
PAN-OS: Reflected Amplification Denial-of-Service (DoS) Vulnerability in URL Filtering
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对网络消息容量的控制不充分(网络放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
Palo Alto Networks PAN-OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是Palo Alto Networks的一款下一代防火墙软件。 Palo Alto Networks PAN-OS URL存在安全漏洞，该漏洞源于过滤策略配置错误。攻击者利用该漏洞执行拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Palo Alto Networks Cloud NGFW All -
Palo Alto Networks PAN-OS 8.1 ~ 8.1.23-h1 -
Palo Alto Networks Prisma Access 2.1 All -

II. Public POCs for CVE-2022-0028

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III. Intelligence Information for CVE-2022-0028

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Vendor Advisories for CVE-2022-0028 (1)

IV. Related Vulnerabilities

Same product: Cloud NGFW
Same vendor: Palo Alto Networks
Same weakness: CWE-406

V. Comments for CVE-2022-0028

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