Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-27872

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/02/2021
Last modified:
08/02/2021

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 1.2.0.62_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11365.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:ac2100:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:ac2400:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:ac2600:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:r6700:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:r6800:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:r6900:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)
cpe:2.3:h:netgear:r7200:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:* 1.2.0.76 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools