CVE-2022-43630: d-link dir-1935 Stack-based Buffer Overflow

Vulnerability summary

CVE-2022-43630 is a high (CVSS 8.8) Stack-based Buffer Overflow vulnerability in d-link dir-1935. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 62.2% of scored vulnerabilities.

Timeline

1. 29-03-2023
   PublishedVulnerability first disclosed.
2. 14-02-2025
   Last modifiedVulnerability information updated.

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of http requests to the web management portal. When parsing the SOAPAction header, the process does not properly validate 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 root. Was ZDI-CAN-16150.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).