CVE-2023-41223: d-link dir-3040 Stack-based Buffer Overflow
Vulnerability summary
CVE-2023-41223 is a medium (CVSS 6.8) Stack-based Buffer Overflow vulnerability in d-link dir-3040. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58.2% of scored vulnerabilities.
Timeline
- 03-05-2024PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
D-Link DIR-3040 prog.cgi SetQuickVPNSettings PSK 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-21623.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.8MediumCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.87%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
0.00 pp
From 0.87% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
D-link1 product
- dir-3040120B03
Dlink1 product
- dir-3040_firmware≤ 1.20b03
2 vendors · 2 products