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CVE-2020-27864

Quick assessment

Affected
D-Link DAP-1860
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

D-Link DAP-1860是中国台湾友讯（D-Link）公司的一款WiFi范围扩展器。TCP（Transmission Control Protocol,传输控制协议）是一种面向连接的、可靠的、基于字节流的传输层通信协议，由IETF的RFC 793定义。 D-Link DAP-1860 固件中存在命令注入漏洞，该漏洞源于外部输入数据构造可执行命令过程中，网络系统或产品未正确过滤其中的特殊元素。攻击者可利用该漏洞执行非法命令。

AI Predicted 9.8 Difficulty: Easy EPSS 10.10% · P96

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-27864

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10880.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DAP-1860和TCP 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DAP-1860是中国台湾友讯（D-Link）公司的一款WiFi范围扩展器。TCP（Transmission Control Protocol,传输控制协议）是一种面向连接的、可靠的、基于字节流的传输层通信协议，由IETF的RFC 793定义。 D-Link DAP-1860 固件中存在命令注入漏洞，该漏洞源于外部输入数据构造可执行命令过程中，网络系统或产品未正确过滤其中的特殊元素。攻击者可利用该漏洞执行非法命令。
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
D-Link DAP-1860 firmware version 1.04B03 -

II. Public POCs for CVE-2020-27864

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III. Intelligence Information for CVE-2020-27864

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Vendor Advisories for CVE-2020-27864 (1)

Other References for CVE-2020-27864 (1)

Same Patch Batch · D-Link · 2021-02-11 · 4 CVEs total

CVE-2020-27862 D-Link DVA-2800 and DSL-2888A 命令注入漏洞
CVE-2020-27863 D-Link DVA-2800 and DSL-2888A 授权问题漏洞
CVE-2020-27865 D-Link DAP-1860和TCP 授权问题漏洞

IV. Related Vulnerabilities

Same product: DAP-1860
Same vendor: D-Link
Same weakness: CWE-77

V. Comments for CVE-2020-27864

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