PT-2020-16819 · D Link · D-Link Dap-1860

Chung96Vn · Published 2020-12-15 · Updated 2021-03-25 · CVE-2020-27864

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DAP-1860 version 1.04B03

Description This issue allows network-adjacent attackers to execute arbitrary code on affected installations. Authentication is not required to exploit this issue. 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 issue to execute code in the context of the device.

Recommendations For D-Link DAP-1860 version 1.04B03, as a temporary workaround, consider disabling the HNAP service until a patch is available. Restrict access to TCP port 80 to minimize the risk of exploitation. Avoid using the Authorization request header in the affected HNAP service until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2020-27864

ZDI-20-1428

Affected Products

D-Link Dap-1860

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-27864 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-20-1428 · Security Note
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27864 · Vendor Advisory
• https://t.me/cvenotify/9834 · Telegram Post