What is CVE-2021-34830?

CVE-2021-34830 is a high-severity vulnerability in D-Link Dap-1330, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-07-15.

How severe is CVE-2021-34830?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in D-Link Dap-1330

CVE-2021-34830

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 Cookie 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 stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-12028.

Vulnerability class: Buffer Overflow

EPSS: 0.023 (81.8th 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 Dap-1330 — versions 1.13B01 BETA
Dlink Dap-1330
Dlink Dap-1330_firmware — versions 1.13b01

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-34830?: CVE-2021-34830 is a high-severity vulnerability in D-Link Dap-1330, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2021-07-15.
How severe is CVE-2021-34830?: High severity. CVSS v3 base score is 8.8 out of 10.