Stack-based Buffer Overflow in Tenda AC7 Router
CVE-2024-2891

8.8HIGH

Key Information:

Vendor
Tenda
Status
Ac7
Vendor
CVE Published:
26 March 2024

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A critical vulnerability exists in the Tenda AC7 router due to a stack-based buffer overflow in the 'formQuickIndex' function of the '/goform/QuickIndex' file. This vulnerability arises from improper handling of the 'PPPOEPassword' argument, allowing an attacker to exploit the flaw remotely. If successfully exploited, this can lead to unauthorized access and execution of arbitrary code within the device's memory. Despite early notification to the vendor, no response has been received, raising concerns about the security updates and user safety for devices utilizing this firmware. It is crucial for users to monitor applicable patches or workarounds to mitigate potential risks associated with this vulnerability.

Affected Version(s)

AC7 15.03.06.44

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-2024-2891 - Proof of Concept

References

https://vuldb.com/?id.257934
vdb-entrytechnical-description
https://vuldb.com/?ctiid.257934
signaturepermissions-required
https://vuldb.com/?submit.300354
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

wxhwxhwxh_miemie (VulDB User)
.