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CVE-2022-43636

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CVE-2022-43636

Published: Mar 29, 2023

Modified: Feb 12, 2025

PUBLISHED

CVSS v3.0

7.5

HIGH

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.

VendorProductVersions

TP-Link

TL-WR940N

affected
6_211111 3.20.1(US)

Weaknesses (CWE)

CWE-330

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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