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CVE-2020-2031— PAN-OS: Integer underflow in the management interface

Quick assessment

Affected
Palo Alto Networks PAN-OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。dnsproxyd是其中的一个DNS（域名系统）代理服务器。 Palo Alto Networks PAN-OS 9.1.3之前的9.1版本中的dnsproxyd组件存在数字错误漏洞。攻击者可利用该漏洞造成拒绝服务。

CVSS 4.9 · Medium EPSS 1.14% · P64
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I. Basic Information for CVE-2020-2031

Vulnerability Information
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Vulnerability Title
PAN-OS: Integer underflow in the management interface
Source: CVE Program / CVE List V5
Vulnerability Description
An integer underflow vulnerability in the dnsproxyd component of the PAN-OS management interface allows authenticated administrators to issue a command from the command line interface that causes the component to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 9.1 versions earlier than PAN-OS 9.1.3. This issue does not impact PAN-OS 8.1, PAN-OS 9.0, or Prisma Access services.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
Palo Alto Networks PAN-OS dnsproxyd 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。dnsproxyd是其中的一个DNS（域名系统）代理服务器。 Palo Alto Networks PAN-OS 9.1.3之前的9.1版本中的dnsproxyd组件存在数字错误漏洞。攻击者可利用该漏洞造成拒绝服务。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Palo Alto Networks PAN-OS 9.0.* -

II. Public POCs for CVE-2020-2031

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III. Intelligence Information for CVE-2020-2031

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Vendor Advisories for CVE-2020-2031 (1)

Same Patch Batch · Palo Alto Networks · 2020-07-08 · 4 CVEs total

CVE-2020-2034 8.1 HIGH PAN-OS: OS command injection vulnerability in GlobalProtect portal
CVE-2020-2030 7.2 HIGH PAN-OS: OS command injection vulnerability in the management interface
CVE-2020-1982 4.8 MEDIUM PAN-OS: TLS 1.0 usage for certain communications with Palo Alto Networks cloud delivered s

IV. Related Vulnerabilities

Same product: PAN-OS
Same vendor: Palo Alto Networks
Same weakness: CWE-191

V. Comments for CVE-2020-2031

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