Tenda AC23 httpd formGetSysToolDDNS out-of-bounds write
CVE-2023-0782

7.2HIGH

Key Information:

Vendor
Tenda
Status
Ac23
Vendor
CVE Published:
11 February 2023

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A serious vulnerability has been identified in the Tenda AC23 router, particularly affecting the functions formSetSysToolDDNS and formGetSysToolDDNS within the /bin/httpd file. This flaw allows for an out-of-bounds write condition, potentially leading to arbitrary code execution. The attack is remotely exploitable, making it critical for users to apply security updates promptly. With the vulnerability already disclosed, attackers may leverage it to compromise network integrity.

Affected Version(s)

AC23 16.03.07.45

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-2023-0782 - Proof of Concept

References

https://vuldb.com/?id.220640
vdb-entrytechnical-description
https://vuldb.com/?ctiid.220640
signaturepermissions-required
https://github.com/jingping911/tendaAC23overflow/blob/mai...
exploit

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

wjp911 (VulDB User)
.