CVE-2021-20151

CVSS V2 High 7.5 CVSS V3 Critical 10
Description
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.
Overview
  • CVE ID
  • CVE-2021-20151
  • Assigner
  • vulnreport@tenable.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-30T22:15:08
  • Last Modified Date
  • 2022-01-07T16:20:13
Weakness Enumerations
CWE URL
CWE-384 http://cwe.mitre.org/data/definitions/384.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 10
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://www.tenable.com/security/research/tra-2021-54 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20151
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20151
History
Created Old Value New Value Data Type Notes
2022-05-10 06:38:05 Added to TrackCVE
2022-12-06 05:21:06 2021-12-30T22:15Z 2021-12-30T22:15:08 CVE Published Date updated
2022-12-06 05:21:06 2022-01-07T16:20:13 CVE Modified Date updated
2022-12-06 05:21:06 Analyzed Vulnerability Status updated