D-Link DIR-859 1.05 /htdocs/cgibin ssdpcgi Shell Metacharacter os command injection

Summaryinfo

A vulnerability classified as critical has been found in D-Link DIR-859 1.05. The impacted element is the function ssdpcgi of the file /htdocs/cgibin. The manipulation as part of Shell Metacharacter leads to os command injection. This vulnerability is traded as CVE-2019-20216. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-859 1.05 (Router Operating System). This issue affects the function ssdpcgi of the file /htdocs/cgibin. The manipulation as part of a Shell Metacharacter leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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 REMOTE_PORT 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 shared 01/29/2020 (Website). It is possible to read the advisory at supportannouncement.us.dlink.com. The identification of this vulnerability is CVE-2019-20216 since 01/02/2020. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/30/2020). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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

The entries VDB-149518 and VDB-149520 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-859

Version

• 1.05

License

• commercial

Website

• Vendor: https://www.dlink.com/

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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