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CVE-2022-43636

Published: Mar 29, 2023Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-330
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.9%
Top 44.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-330

Affected Products

TL-WR940NTP-Link Technologies Co Ltd.Networking Infrastructure
tl-wr940n firmwaretp-linkNetworking Infrastructure
TL-WR940NTP-LinkNetworking Infrastructure
tp-link technologies co ltd.commercialCNNetworking Infrastructureaka tl-wr841n, tl-wr940n, tl-wr886n
tp-linkcommercialTWNetworking Infrastructureaka tp-link, tp link

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://www.zerodayinitiative.com/advisories/ZDI-22-1614/
zerodayinitiative.com
https://www.cybersecurity-help.cz/vdb/SB2022112409
cybersecurity-help.cz
https://www.zerodayinitiative.com/advisories/ZDI-22-1614/
zerodayinitiative.com

Timeline

Published
Mar 29, 2023
Last Updated
Nov 21, 2024

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