CVE-2020-27866

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 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 incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355.
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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:-:*:*:*:*:*:*:*

Information

Published : 2021-02-11 16:15

Updated : 2021-03-26 12:34


NVD link : CVE-2020-27866

Mitre link : CVE-2020-27866


JSON object : View

CWE
CWE-288

Authentication Bypass Using an Alternate Path or Channel

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Products Affected

netgear

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