CVE-2023-6906

Totolink A7100RU HTTP POST Request main buffer overflow

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Una vulnerabilidad fue encontrada en Totolink A7100RU 7.4cu.2313_B20191024 y clasificada como crítica. La función main del archivo /cgi-bin/cstecgi.cgi?action=login del componente HTTP POST Request Handler es afectada por esta vulnerabilidad. La manipulación del argumento flag con la entrada ie8 provoca un desbordamiento de búfer. Es posible lanzar el ataque de forma remota. El exploit ha sido divulgado al público y puede utilizarse. El identificador de esta vulnerabilidad es VDB-248268. NOTA: Se contactó primeramente con el proveedor sobre esta divulgación, pero no respondió de ninguna manera.

Es wurde eine Schwachstelle in Totolink A7100RU 7.4cu.2313_B20191024 gefunden. Sie wurde als kritisch eingestuft. Dabei betrifft es die Funktion main der Datei /cgi-bin/cstecgi.cgi?action=login der Komponente HTTP POST Request Handler. Durch das Beeinflussen des Arguments flag mit der Eingabe ie8 mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei über das Netzwerk erfolgen. Der Exploit steht zur öffentlichen Verfügung.

*Credits: unpWn4bl3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-12-17 CVE Reserved
2023-12-18 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-09-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (2)

URL	Tag	Source
https://vuldb.com/?id.248268	Technical Description

URL	Date	SRC
https://github.com/unpWn4bL3/iot-security/blob/main/1.md	2024-08-02

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Totolink Search vendor "Totolink"	A7100ru Firmware Search vendor "Totolink" for product "A7100ru Firmware"	7.4cu.2313_b20191024 Search vendor "Totolink" for product "A7100ru Firmware" and version "7.4cu.2313_b20191024"	-	Affected	in	Totolink Search vendor "Totolink"	A7100ru Search vendor "Totolink" for product "A7100ru"	-	-	Safe