Buffer overflow in D-Link Dir-3040
CVE-2022-43648
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 1.20B03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the MiniDLNA service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the MiniDLNA service. Was ZDI-CAN-19910.
Vulnerability class: Buffer Overflow
EPSS: 0.009 (56.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- D-link Dir-3040 — versions 1.20B03
- Dlink Dir-3040
- Dlink Dir-3040_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory)
- zdi-disclosures@trendmicro.com (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-43648?
- CVE-2022-43648 is a high-severity vulnerability in D-Link Dir-3040, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2023-03-29.
- How severe is CVE-2022-43648?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2022-43648 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.