Enghouse Web Chat 6.1.300.31 POST Request server-side request forgery

Summaryinfo

A vulnerability classified as critical has been found in Enghouse Web Chat 6.1.300.31. Affected by this issue is some unknown functionality. The manipulation of the argument WebServiceLocation=http:/localhost:8085/UCWebServices/ as part of POST Request leads to server-side request forgery. This vulnerability is uniquely identified as CVE-2019-16948. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Enghouse Web Chat 6.1.300.31 (Chat Software). This issue affects some unknown processing. The manipulation of the argument WebServiceLocation=http:/localhost:8085/UCWebServices/ as part of a POST Request leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An SSRF issue was discovered in Enghouse Web Chat 6.1.300.31. In any POST request, one can replace the port number at WebServiceLocation=http://localhost:8085/UCWebServices/ with a range of ports to determine what is visible on the internal network (as opposed to what general web traffic would see on the product's host). The response from open ports is different than from closed ports. The product does not allow one to change the protocol: anything except http(s) will throw an error; however, it is the type of error that allows one to determine if a port is open or not.

The weakness was disclosed 11/13/2019. The identification of this vulnerability is CVE-2019-16948 since 09/29/2019. 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.

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

The entries VDB-145490, VDB-145489 and VDB-145488 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Chat Software

Vendor

• Enghouse

Name

• Web Chat

Version

• 6.1.300.31

CPE 2.3info

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CPE 2.2info

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