CVE-2020-27864

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 8.3 HIGH

8.8^/10

CVSS v3.0 : HIGH

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

8.3^/10

CVSS v2.0 : HIGH

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

Exploitability : 6.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-1428/	Third Party Advisory VDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197	Vendor Advisory

Advertisement

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:dlink:dap-1860_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:dlink:dap-1860:ax:*:*:*:*:*:*:*

Information

Published : 2021-02-11 16:15

Updated : 2021-03-25 12:17

NVD link : CVE-2020-27864

Mitre link : CVE-2020-27864

JSON object : View

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Advertisement

Products Affected

dlink

dap-1860_firmware
dap-1860

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-20-1428/", "name": "https://www.zerodayinitiative.com/advisories/ZDI-20-1428/", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "MISC"}, {"url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197", "name": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197", "tags": ["Vendor Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-77"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-27864", "ASSIGNER": "zdi-disclosures@trendmicro.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 8.3, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 6.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}}, "publishedDate": "2021-02-12T00:15Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:dlink:dap-1860_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "1.04b03"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:dlink:dap-1860:ax:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-03-25T19:17Z"}