VULNERABILITY INTELLIGENCE

CVE-2023-41219

CVSS score6.8 MEDIUM

EPSS probability0.90%

CISA KEVNot currently listed

Published2024-05-03

Last modified2026-06-17

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

Description

D-Link DIR-3040 prog.cgi SetWanSettings Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before copying it to a fixed-size stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21619.

Weakness classification

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

Primary references

zdi-disclosures@trendmicro.com — Patch, Vendor Advisory
zdi-disclosures@trendmicro.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory