D-Link DIR-890L A1 Telnet Service /etc/config/image_sign hard-coded credentials

Summaryinfo

A vulnerability was found in D-Link DIR-600, DIR-615 J1, DIR-645 A1, DIR-815 A1, DIR-823 A1, DIR-842 C1 and DIR-890L A1. It has been declared as critical. Affected is an unknown function of the file /etc/config/image_sign of the component Telnet Service. Such manipulation leads to hard-coded credentials. This vulnerability is listed as CVE-2019-18852. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-600, DIR-615 J1, DIR-645 A1, DIR-815 A1, DIR-823 A1, DIR-842 C1 and DIR-890L A1 (Router Operating System). Affected by this issue is some unknown processing of the file /etc/config/image_sign of the component Telnet Service. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. Using CWE to declare the problem leads to CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Certain D-Link devices have a hardcoded Alphanetworks user account with TELNET access because of /etc/config/image_sign or /etc/alpha_config/image_sign. This affects DIR-600 B1 V2.01 for WW, DIR-890L A1 v1.03, DIR-615 J1 v100 (for DCN), DIR-645 A1 v1.03, DIR-815 A1 v1.01, DIR-823 A1 v1.01, and DIR-842 C1 v3.00.

The weakness was presented 11/11/2019. This vulnerability is handled as CVE-2019-18852 since 11/11/2019. The attack may be launched remotely. No form of authentication is required for exploitation. 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 02/11/2024). This vulnerability is assigned to T1110.001 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-600
• DIR-615 J1
• DIR-645 A1
• DIR-815 A1
• DIR-823 A1
• DIR-842 C1
• DIR-890L A1

License

• commercial

Website

• Vendor: https://www.dlink.com/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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