Buffer overflow in D-Link Dir-3040
CVE-2023-41225
D-Link DIR-3040 prog.cgi SetIPv6PppoeSettings 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-21651.
Vulnerability class: Buffer Overflow
EPSS: 0.007 (49.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- D-link Dir-3040 — versions 120B03
- Dlink Dir-3040
- Dlink Dir-3040_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)
- zdi-disclosures@trendmicro.com (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-41225?
- CVE-2023-41225 is a medium-severity vulnerability in D-Link Dir-3040, classified under Stack-based Buffer Overflow. CVSS score: 6.8/10. Published 2024-05-03.
- How severe is CVE-2023-41225?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2023-41225 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.