PT-2022-6601 · D Link · D-Link Dap-2020+1

Published 2022-09-06 · Updated 2025-05-16 · CVE-2023-32140

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DAP-1360 (affected versions not specified) D-Link DAP-2020 (affected versions not specified)

Description This issue allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link routers. Authentication is not required to exploit this issue. The specific flaw exists within the handling of requests to the "/cgi-bin/webproc" endpoint. When parsing the var:sys Token parameter, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this issue to execute code in the context of root.

Recommendations For D-Link DAP-1360, consider disabling access to the "/cgi-bin/webproc" endpoint until a patch is available. For D-Link DAP-2020, restrict the use of the var:sys Token parameter in the affected endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

RCE

Stack Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-121

CWE-122

Related Identifiers

BDU:2023-02726

CVE-2023-32140

ZDI-23-532

Affected Products

D-Link Dap-1360

D-Link Dap-2020

References · 8

• https://osv.dev/vulnerability/CVE-2023-32140 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-02726 · Security Note
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10324 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-32140 · Security Note
• https://t.me/cvenotify/122667 · Telegram Post
• https://zerodayinitiative.com/advisories/ZDI-CAN-18418 · Note
• https://zerodayinitiative.com/advisories/ZDI-23-532 · Patch, Security Note
• https://vuldb.com/ru/?id.228099 · Note