A vulnerability has been found in D-Link DIR-823G 2018-09-19 (Router Operating System) and classified as critical. This vulnerability affects an unknown functionality of the file /HNAP1 of the component GoAhead Configuration. The manipulation with an unknown input leads to a password recovery vulnerability. The CWE definition for the vulnerability is CWE-640. The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

On D-Link DIR-823G 2018-09-19 devices, the GoAhead configuration allows /HNAP1 SetPasswdSettings commands without authentication to trigger an admin password change.

The bug was discovered 10/01/2018. The weakness was disclosed 10/03/2018 (Website). The advisory is available at xz.aliyun.com. This vulnerability was named CVE-2018-17881 since 10/01/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/29/2020). This vulnerability is assigned to T1552 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k.

Proper firewalling of is able to address this issue.

The entry 124761 is pretty similar.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-823G

Version

• 2018-09-19

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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CVSSv2info

Exploitinginfo

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