CVE-2021-34829: d-link dap-1330 Classic Buffer Overflow

Vulnerability summary

CVE-2021-34829 is a high (CVSS 8.8) Classic Buffer Overflow vulnerability in d-link dap-1330. EPSS estimates a 2.33% chance of exploitation in the next 30 days, higher than 83.4% of scored vulnerabilities.

Timeline

1. 15-07-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.