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CVE-2022-43636

Quick assessment

Affected
TP-Link TL-WR940N
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.

TP-LINK TL-WR940N是中国普联（TP-LINK）公司的一款无线路由器。 TP-Link TL-WR940N 6_211111 版本存在安全特征问题漏洞，该漏洞源于用于会话管理的序列号缺乏足够的随机性。

AI Predicted 7.5 Difficulty: Easy EPSS 0.91% · P58
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I. Basic Information for CVE-2022-43636

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 bypass authentication on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of sufficient randomness in the sequnce numbers used for session managment. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-18334.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不充分的随机数
Source: CVE Program / CVE List V5
Vulnerability Title
TP-LINK TL-WR940N 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-LINK TL-WR940N是中国普联（TP-LINK）公司的一款无线路由器。 TP-Link TL-WR940N 6_211111 版本存在安全特征问题漏洞，该漏洞源于用于会话管理的序列号缺乏足够的随机性。
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-WR940N 6_211111 3.20.1(US) -

II. Public POCs for CVE-2022-43636

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III. Intelligence Information for CVE-2022-43636

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Vendor Advisories for CVE-2022-43636 (1)

Same Patch Batch · TP-Link · 2023-03-29 · 3 CVEs total

CVE-2022-42433 TP-LINK TL-WR841N 操作系统命令注入漏洞
CVE-2022-43635 TP-LINK TL-WR940N 安全漏洞

IV. Related Vulnerabilities

Same product: TL-WR940N
Same vendor: TP-Link
Same weakness: CWE-330

V. Comments for CVE-2022-43636

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