D-Link DIR-823G 1.02B03 HNAP API /HNAP1 command injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-823G 1.02B03. The affected element is an unknown function of the file /HNAP1 of the component HNAP API. The manipulation leads to command injection. This vulnerability is uniquely identified as CVE-2022-44808. No exploit exists.

Detailsinfo

A vulnerability was found in D-Link DIR-823G 1.02B03 (Router Operating System) and classified as critical. This issue affects an unknown functionality of the file /HNAP1 of the component HNAP API. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A command injection vulnerability has been found on D-Link DIR-823G devices with firmware version 1.02B03 that allows an attacker to execute arbitrary operating system commands through well-designed /HNAP1 requests. Before the HNAP API function can process the request, the system function executes an untrusted command that triggers the vulnerability.

The weakness was disclosed 11/22/2022. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-44808 since 11/07/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/25/2025). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-823G

Version

• 1.02B03

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion