Authentication Bypass Vulnerability in TP-Link Routers
CVE-2022-43636

7.5HIGH

Key Information:

Vendor

Tp-link
Status
Tl-wr940n
Vendor
CVE Published:
29 March 2023

What is CVE-2022-43636?

This vulnerability in TP-Link TL-WR940N routers allows nearby attackers to bypass authentication mechanisms due to a flaw in the httpd service. The service, which operates on TCP port 80, suffers from insufficient randomness in session management sequence numbers. As a result, attackers can exploit this weakness to obtain unauthorized access to the router’s functionalities without needing prior authentication. Users are encouraged to consult the vendor for patches or mitigations.

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Affected Version(s)

TL-WR940N 6_211111 3.20.1(US)

References

https://www.zerodayinitiative.com/advisories/ZDI-22-1614/

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ExLuck
JSON
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