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CVE-2020-1999— PAN-OS: Threat signatures are evaded by specifically crafted packets

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。 Palo Alto Networks PAN-OS 存在代码问题漏洞，该漏洞允许攻击者可利用该漏洞与网络中的设备通信，而不通过专门设计的TCP数据包发送数据来分析威胁。该技术避开了基于签名的威胁检测。以下产品及版本受到影响: 8.1.17之前的8.1版本，9.0.11之前的9.0版本，9.1.5之前的9.1版本，PAN-OS 7.1所有版本和PAN-OS 8.0版本。

CVSS 5.3 · Medium EPSS 1.34% · P70

Possible ATT&CK Techniques 1 AI

T1564 · Hide Artifacts
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I. Basic Information for CVE-2020-1999

Vulnerability Information
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Vulnerability Title
PAN-OS: Threat signatures are evaded by specifically crafted packets
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability exists in the Palo Alto Network PAN-OS signature-based threat detection engine that allows an attacker to communicate with devices in the network in a way that is not analyzed for threats by sending data through specifically crafted TCP packets. This technique evades signature-based threat detection. This issue impacts: PAN-OS 8.1 versions earlier than 8.1.17; PAN-OS 9.0 versions earlier than 9.0.11; PAN-OS 9.1 versions earlier than 9.1.5; All versions of PAN-OS 7.1 and PAN-OS 8.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
Palo Alto Networks PAN-OS 代码问题漏洞
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。 Palo Alto Networks PAN-OS 存在代码问题漏洞，该漏洞允许攻击者可利用该漏洞与网络中的设备通信，而不通过专门设计的TCP数据包发送数据来分析威胁。该技术避开了基于签名的威胁检测。以下产品及版本受到影响: 8.1.17之前的8.1版本，9.0.11之前的9.0版本，9.1.5之前的9.1版本，PAN-OS 7.1所有版本和PAN-OS 8.0版本。
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 7.1.* -

II. Public POCs for CVE-2020-1999

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III. Intelligence Information for CVE-2020-1999

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Vendor Advisories for CVE-2020-1999 (1)

Same Patch Batch · Palo Alto Networks · 2020-11-12 · 5 CVEs total

CVE-2020-2050 8.2 HIGH PAN-OS: Authentication bypass vulnerability in GlobalProtect SSL VPN client certificate ve
CVE-2020-2022 7.5 HIGH PAN-OS: Panorama session disclosure during context switch into managed device
CVE-2020-2000 7.2 HIGH PAN-OS: OS command injection and memory corruption vulnerability
CVE-2020-2048 3.3 LOW PAN-OS: System proxy passwords may be logged in clear text while viewing system state

IV. Related Vulnerabilities

Same product: PAN-OS
Same vendor: Palo Alto Networks
Same weakness: CWE-754

V. Comments for CVE-2020-1999

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