Buffer overflow in D-Link Dap-1330
CVE-2021-34829
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1330 1.13B01 BETA routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the HNAP_AUTH HTTP header. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-12065.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.023 (82.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- D-Link Dap-1330 — versions 1.13B01 BETA
- Dlink Dap-1330
- Dlink Dap-1330 Firmware — versions 1.13b01
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-21-681/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34829?
- CVE-2021-34829 is a high-severity vulnerability in D-Link Dap-1330, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2021-07-15.
- How severe is CVE-2021-34829?
- High severity. CVSS v3 base score is 8.8 out of 10.