Arbitrary Code Execution Vulnerability in TP-Link Routers
CVE-2022-24973

6.8MEDIUM

Key Information:

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

Summary

This vulnerability affects TP-Link TL-WR940N routers, allowing network-adjacent attackers to execute arbitrary code on affected installations. The flaw occurs within the HTTP daemon (httpd) listening on TCP port 80, which fails to properly validate the length of user-supplied data before copying it to a fixed-length stack-based buffer. Although authentication is mandatory for exploitation, should an attacker succeed, they could execute arbitrary code with root privileges, posing significant risks to the device and connected network.

Affected Version(s)

TL-WR940N 3.20.1 Build 200316 Rel.34392n (5553)

References

https://www.zerodayinitiative.com/advisories/ZDI-22-406/

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vadym Kolisnichenko
.