CVE-2021-20151

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.

CVSS v3 10.0 CRITICAL
CVSS v2.0 7.5 HIGH

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.tenable.com/security/research/tra-2021-54	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*

History

07 Jan 2022, 16:20

Type	Values Removed	Values Added
First Time		Trendnet Trendnet tew-827dru Firmware Trendnet tew-827dru
CPE		cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:::::::* cpe:2.3:h:trendnet:tew-827dru:2.0:::::::*
CWE		CWE-384
References	~~(MISC) https://www.tenable.com/security/research/tra-2021-54 -~~	(MISC) https://www.tenable.com/security/research/tra-2021-54 - Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 10.0

30 Dec 2021, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-12-30 22:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-20151

Mitre link : CVE-2021-20151

CVE.ORG link : CVE-2021-20151

JSON object : View

Products Affected

trendnet

tew-827dru
tew-827dru_firmware

CWE

CWE-384

Session Fixation

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