Totolink A7100RU HTTP POST Request main buffer overflow
CVE-2023-6906

9.8CRITICAL

Key Information:

Vendor

Totolink
Status
A7100ru
Vendor
CVE Published:
18 December 2023

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-6906?

A remote buffer overflow vulnerability exists in the Totolink A7100RU router, specifically in the HTTP POST Request Handler within the /cgi-bin/cstecgi.cgi script. This vulnerability arises when manipulating the 'flag' argument with the input 'ie8', allowing attackers to overflow the buffer, potentially leading to unauthorized access or execution of malicious code. This exploit has been publicly disclosed and attackers may leverage it to compromise affected devices. It is crucial for users to apply necessary updates and security measures to protect their networks.

Affected Version(s)

A7100RU 7.4cu.2313_B20191024

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-2023-6906 - Proof of Concept

References

https://vuldb.com/?id.248268
vdb-entrytechnical-description
https://vuldb.com/?ctiid.248268
signaturepermissions-required
https://github.com/unpWn4bL3/iot-security/blob/main/1.md
exploit

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

unpWn4bl3 (VulDB User)
.