D-Link DIR-818LW/DIR-860L 2.05.B03 Incomplete Fix CVE-2018-6530 soap.cgi service os command injection

Summaryinfo

A vulnerability marked as critical has been reported in D-Link DIR-818LW and DIR-860L 2.05.B03. The affected element is an unknown function of the file soap.cgi of the component Incomplete Fix CVE-2018-6530. This manipulation of the argument service with the input && as part of Parameter causes os command injection. The identification of this vulnerability is CVE-2018-20114. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in D-Link DIR-818LW and DIR-860L 2.05.B03 (Router Operating System). Affected by this vulnerability is an unknown code of the file soap.cgi of the component Incomplete Fix CVE-2018-6530. The manipulation of the argument service with the input value && leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

On D-Link DIR-818LW Rev.A 2.05.B03 and DIR-860L Rev.B 2.03.B03 devices, unauthenticated remote OS command execution can occur in the soap.cgi service of the cgibin binary via an "&&" substring in the service parameter. NOTE: this issue exists because of an incomplete fix for CVE-2018-6530.

The bug was discovered 01/01/2019. The weakness was shared 01/02/2019 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2018-20114 since 12/12/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/25/2020). MITRE ATT&CK project uses the attack technique T1202 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-818LW
• DIR-860L

Version

• 2.05.B03

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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CPE 2.2info

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