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cve[email protected]CVE-2021-20122
HistoryOct 11, 2021 - 5:15 p.m.

CVE-2021-20122

2021-10-1117:15:07
CWE-78
web.nvd.nist.gov
39
telus
wi-fi hub
prv65b444a-s-ts
firmware
command injection
authenticated
tr69_cmd.cgi
cve-2021-20122

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.6

Confidence

High

EPSS

0.975

Percentile

100.0%

The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router’s LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device.

Affected configurations

NVD
Node
telusprv65b444a-s-ts_firmwareMatch3.00.20
AND
telusprv65b444a-s-tsMatch-

CNA Affected

[
  {
    "product": "Telus Wi-Fi Hub (PRV65B444A-S-TS)",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "3.00.20"
      }
    ]
  }
]

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.6

Confidence

High

EPSS

0.975

Percentile

100.0%