CVE-2022-43636

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-22-1614/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tp-link:tl-wr940n_firmware:6_211111_3.20.1:*:*:*:*:*:*:*

cpe:2.3:h:tp-link:tl-wr940n:-:*:*:*:*:*:*:*

History

07 Apr 2023, 14:16

Type	Values Removed	Values Added
First Time		Tp-link Tp-link tl-wr940n Firmware Tp-link tl-wr940n
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8
References	~~(MISC) https://www.zerodayinitiative.com/advisories/ZDI-22-1614/ -~~	(MISC) https://www.zerodayinitiative.com/advisories/ZDI-22-1614/ - Third Party Advisory, VDB Entry
CPE		cpe:2.3:h:tp-link:tl-wr940n:-:::::::* cpe:2.3:o:tp-link:tl-wr940n_firmware:6_211111_3.20.1:::::::*

29 Mar 2023, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2023-03-29 19:15

Updated : 2023-12-10 15:01

NVD link : CVE-2022-43636

Mitre link : CVE-2022-43636

CVE.ORG link : CVE-2022-43636

JSON object : View

Products Affected

tp-link

tl-wr940n_firmware
tl-wr940n

CWE

CWE-330

Use of Insufficiently Random Values

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