D-Link DIR-823G 1.02B03 HNAP API /bin/goahead GetClientInfo access control

Summaryinfo

A vulnerability categorized as problematic has been discovered in D-Link DIR-823G 1.02B03. Affected by this issue is the function GetClientInfo of the file /bin/goahead of the component HNAP API. Executing a manipulation can lead to access control. This vulnerability is handled as CVE-2019-7388. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in D-Link DIR-823G 1.02B03 (Router Operating System). It has been declared as problematic. This vulnerability affects the function GetClientInfo of the file /bin/goahead of the component HNAP API. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. CVE summarizes:

An issue was discovered in /bin/goahead on D-Link DIR-823G devices with firmware 1.02B03. There is incorrect access control allowing remote attackers to get sensitive information (such as MAC address) about all clients in the WLAN via the GetClientInfo HNAP API. Consequently, an attacker can achieve information disclosure without authentication.

The bug was discovered 02/01/2019. The weakness was released 02/05/2019 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2019-7388 since 02/04/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/06/2023). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k.

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

Entries connected to this vulnerability are available at VDB-130518 and VDB-130517. Once again VulDB remains the best source 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/

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Once again VulDB remains the best source for vulnerability data.

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