D-Link DIR-620 up to 2.0.22 Custom Firmware hard-coded credentials

Summaryinfo

A vulnerability marked as critical has been reported in D-Link DIR-620 up to 2.0.22. This issue affects some unknown processing of the component Custom Firmware. Performing a manipulation results in hard-coded credentials. This vulnerability is cataloged as CVE-2018-6213. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in D-Link DIR-620 up to 2.0.22 (Router Operating System). This affects an unknown code of the component Custom Firmware. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the web server on D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, there is a hardcoded password of anonymous for the admin account.

The bug was discovered 01/15/2018. The weakness was shared 06/20/2018 (Website). It is possible to read the advisory at securitynewspaper.com. This vulnerability is uniquely identified as CVE-2018-6213 since 01/24/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/20/2020). The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 156 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.

The entries VDB-119737 and VDB-119738 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-620

Version

• 1.0.3
• 1.0.37
• 1.3.1
• 1.3.3
• 1.3.7
• 1.4.0
• 2.0.22

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