CVE-2021-20151

Severity Score

10.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device. The router's management software manages web sessions based on IP address rather than verifying client cookies/session tokens/etc. This allows an attacker (whether from a different computer, different web browser on the same machine, etc.) to take over an existing session. This does require the attacker to be able to spoof or take over original IP address of the original user's session.

Trendnet AC2600 TEW-827DRU versión 2.08B01, contiene un fallo en la administración de sesiones del dispositivo. El software de administración del router administra las sesiones web basándose en la dirección IP en lugar de verificar las cookies/tokens de sesión del cliente/etc. Esto permite a un atacante (ya sea desde un ordenador diferente, un navegador web distinto en la misma máquina, etc.) hacerse con una sesión existente. Esto requiere que el atacante sea capaz de falsificar o tomar la dirección IP original de la sesión del usuario original.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-12-30 CVE Published
2024-08-03 CVE Updated
2024-09-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-384: Session Fixation

CAPEC

References (1)

URL	Tag	Source
https://www.tenable.com/security/research/tra-2021-54	Third Party Advisory

URL	Date	SRC

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
Trendnet Search vendor "Trendnet"	Tew-827dru Firmware Search vendor "Trendnet" for product "Tew-827dru Firmware"	2.08b01 Search vendor "Trendnet" for product "Tew-827dru Firmware" and version "2.08b01"	-	Affected	in	Trendnet Search vendor "Trendnet"	Tew-827dru Search vendor "Trendnet" for product "Tew-827dru"	2.0 Search vendor "Trendnet" for product "Tew-827dru" and version "2.0"	-	Safe