Stack-based Buffer Overflow in Tenda i21 Router
CVE-2024-4494

8.8HIGH

Key Information:

Vendor
Tenda
Status
I21
Vendor
CVE Published:
5 May 2024

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A significant vulnerability has been identified in the Tenda i21 router, particularly in the function formSetUplinkInfo located in the /goform/setUplinkInfo file. This vulnerability allows for a stack-based buffer overflow, triggered by the manipulation of the pingHostIp2 argument. As a result, this vulnerability poses a severe risk as it can be exploited remotely, allowing attackers to execute arbitrary code or take control of the affected device. Despite notifications sent to the vendor regarding this critical issue, there has been no response. Users of Tenda i21 routers, especially version 1.0.0.14(4656), are advised to take immediate precautions to secure their devices against potential exploits.

Affected Version(s)

i21 1.0.0.14(4656)

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2024-4494 - Proof of Concept

References

https://vuldb.com/?id.263083
vdb-entrytechnical-description
https://vuldb.com/?ctiid.263083
signaturepermissions-required
https://vuldb.com/?submit.323604
third-party-advisory

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

yhryhryhr_miemie (VulDB User)
.