D-Link DIR-645 1.03 A1 cgibin hnap_main buffer overflow

Summaryinfo

A vulnerability classified as critical was found in D-Link DIR-645 1.03 A1. This impacts the function hnap_main of the component cgibin Handler. Such manipulation leads to buffer overflow. This vulnerability is listed as CVE-2021-43722. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-645 1.03 A1 (Router Operating System). Affected by this issue is the function hnap_main of the component cgibin Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. 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, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was presented 04/01/2022. The advisory is available at github.com. This vulnerability is handled as CVE-2021-43722 since 11/15/2021. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/01/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-645

Version

• 1.03 A1

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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CPE 2.2info

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