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CVE-2019-17147

Quick assessment

Affected
TP-Link TL-WR841N
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-Link TL-WR841N是中国普联（TP-Link）公司的一款无线路由器。 TP-LINK TL-WR841N中的Web服务（默认情况下监听TCP 80端口）存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。远程攻击者可借助特制HTTP请求利用该漏洞在admin用户的上下文中执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 13.65% · P96
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I. Basic Information for CVE-2019-17147

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length static buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-8457.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link TL-WR841N 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link TL-WR841N是中国普联（TP-Link）公司的一款无线路由器。 TP-LINK TL-WR841N中的Web服务（默认情况下监听TCP 80端口）存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。远程攻击者可借助特制HTTP请求利用该漏洞在admin用户的上下文中执行任意代码。
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
TP-Link TL-WR841N 0.9.1 4.16 v007c.0 Build 180613 Rel.42415n -

II. Public POCs for CVE-2019-17147

# POC Description Source Link Shenlong Link
1 This repo contains dumped flash partitions with firmware version vulnerable to CVE-2019-17147, and some useful binaries to downgrade and debug your WR841N router. https://github.com/DrmnSamoLiu/CVE-2019-17147_Practice_Material POC Details
2 None https://github.com/imnot-ye/CVE-2019-17147 POC Details
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III. Intelligence Information for CVE-2019-17147

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Vendor Advisories for CVE-2019-17147 (1)

IV. Related Vulnerabilities

Same product: TL-WR841N
Same vendor: TP-Link
Same weakness: CWE-120

V. Comments for CVE-2019-17147

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