D-Link DIR-859 1.05/1.06B01 Beta01 urn /htdocs/cgibin ssdpcgi Shell Metacharacter os command injection

Summaryinfo

A vulnerability classified as critical was found in D-Link DIR-859 1.05/1.06B01 Beta01. This affects the function ssdpcgi of the file /htdocs/cgibin of the component urn. The manipulation as part of Shell Metacharacter results in os command injection. This vulnerability is known as CVE-2019-20217. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in D-Link DIR-859 1.05/1.06B01 Beta01 (Router Operating System). Affected is the function ssdpcgi of the file /htdocs/cgibin of the component urn. The manipulation as part of a Shell Metacharacter leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via the urn: to the M-SEARCH method in ssdpcgi() in /htdocs/cgibin, because SERVER_ID is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attacker to concatenate arbitrary commands separated by shell metacharacters.

The weakness was published 01/29/2020 (Website). The advisory is shared for download at supportannouncement.us.dlink.com. This vulnerability is traded as CVE-2019-20217 since 01/02/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 01/30/2020). The MITRE ATT&CK project declares the attack technique as T1202.

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

Similar entries are available at VDB-149518 and VDB-149519. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-859

Version

• 1.05
• 1.06B01 Beta01

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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