CVE-2020-27872

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-27872
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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.8 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 6.5 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-071/ Third Party Advisory VDB Entry
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2100:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2400:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2600:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6700:v2:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6800:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6900:v2:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7200:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7350:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7400:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7450:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6220:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6230:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6260:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6330:-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6350:-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6850:-:*:*:*:*:*:*:*

Configuration 17 (hide)

AND
cpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6120:-:*:*:*:*:*:*:*

Configuration 18 (hide)

AND
cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6020:-:*:*:*:*:*:*:*

Configuration 19 (hide)

AND
cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6080:-:*:*:*:*:*:*:*
History

08 Feb 2021, 20:12

Type Values Removed Values Added
References (N/A) https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers - (N/A) https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers - Vendor Advisory
References (N/A) https://www.zerodayinitiative.com/advisories/ZDI-21-071/ - (N/A) https://www.zerodayinitiative.com/advisories/ZDI-21-071/ - Third Party Advisory, VDB Entry
CWE CWE-668
CVSS v2 : unknown
v3 : unknown 		v2 : 5.8
v3 : 8.8
CPE cpe:2.3:h:netgear:r6850:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6220:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6900:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7350:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7450:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2100:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6020:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6800:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2400:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6330:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6080:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6350:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7200:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:netgear:ac2600:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r7400:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6260:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6230:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6120:-:*:*:*:*:*:*:*
cpe:2.3:h:netgear:r6700:v2:*:*:*:*:*:*:*

04 Feb 2021, 19:15

Type Values Removed Values Added
Summary 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. 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.

04 Feb 2021, 18:27

Type Values Removed Values Added
New CVE
Information

Published : 2021-02-04 17:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-27872

Mitre link : CVE-2020-27872

CVE.ORG link : CVE-2020-27872

JSON object : View

Products Affected

netgear

  • r7200_firmware
  • r6120_firmware
  • r6900
  • r6020
  • r6900_firmware
  • r6800
  • r6850_firmware
  • r6080
  • r6260_firmware
  • r6220_firmware
  • r7350
  • ac2600_firmware
  • r7400
  • r6120
  • r6700
  • r6800_firmware
  • r7450
  • ac2100_firmware
  • r7200
  • r7450_firmware
  • r6850
  • r7350_firmware
  • r6330
  • ac2400_firmware
  • r6220
  • ac2400
  • r6700_firmware
  • ac2600
  • r6230
  • r6260
  • r6080_firmware
  • r6020_firmware
  • r6350
  • ac2100
  • r6230_firmware
  • r6330_firmware
  • r7400_firmware
  • r6350_firmware
CWE
CWE-668

Exposure of Resource to Wrong Sphere

CWE-642

External Control of Critical State Data