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nvd[email protected]NVD:CVE-2020-27864
HistoryFeb 12, 2021 - 12:15 a.m.

CVE-2020-27864

2021-02-1200:15:12
CWE-77
web.nvd.nist.gov
4
network-adjacent attackers
arbitrary code execution
d-link dap-1860
firmware
hnap service
tcp port 80
system call
zdi-can-10880

CVSS2

8.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.003

Percentile

68.4%

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10880.

Affected configurations

Nvd
Node
dlinkdap-1860_firmwareRange1.04b03
AND
dlinkdap-1860Matchax
VendorProductVersionCPE
dlinkdap-1860_firmware*cpe:2.3:o:dlink:dap-1860_firmware:*:*:*:*:*:*:*:*
dlinkdap-1860axcpe:2.3:h:dlink:dap-1860:ax:*:*:*:*:*:*:*

CVSS2

8.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.003

Percentile

68.4%

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