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TenableCVE-2021-20151

HistoryDec 30, 2021 - 10:15 p.m.

CVE-2021-20151

2021-12-3022:15:08

CWE-384

tenable

web.nvd.nist.gov

trendnet ac2600

tew-827dru

session management

flaw

cve-2021-20151

nvd

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

AI Score

9.1

Confidence

High

EPSS

0.002

Percentile

61.0%

JSON

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.

Affected configurations

Nvd

Node

trendnettew-827dru_firmwareMatch2.08b01

AND

trendnettew-827druMatch2.0

VendorProductVersionCPE
trendnettew-827dru_firmware2.08b01cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*
trendnettew-827dru2.0cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
trendnet	tew-827dru_firmware	2.08b01	cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:::::::*
trendnet	tew-827dru	2.0	cpe:2.3:h:trendnet:tew-827dru:2.0:::::::*

CNA Affected

[
  {
    "product": "Trendnet AC2600 TEW-827DRU",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "2.08B01"
      }
    ]
  }
]

References

www.tenable.com/security/research/tra-2021-54

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

AI Score

9.1

Confidence

High

EPSS

0.002

Percentile

61.0%

JSON

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