TP-Link Archer AX21 tmpServer Command 0x422 Stack-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2023-27333

6.8MEDIUM

Key Information:

Vendor

Tp-link
Status
Archer Ax21
Vendor
CVE Published:
3 May 2024

What is CVE-2023-27333?

A stack-based buffer overflow vulnerability has been identified in the handling of command 0x422 by the tmpServer service in TP-Link Archer AX21 routers. This flaw allows network-adjacent attackers, who possess valid authentication credentials, to exploit the vulnerability and execute arbitrary code in the context of the root user. The failure to properly validate the length of user-supplied input leads to the overflow condition, enabling an attacker to gain control over the affected system. Organizations using TP-Link Archer AX21 devices are urged to implement appropriate security measures to mitigate potential exploits.

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Affected Version(s)

Archer AX21 1.1.3 Build 20221125

References

https://www.zerodayinitiative.com/advisories/ZDI-23-244/
x_research-advisory

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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