Cisco WebEX Connect IM Web Interface Parameter cross site scripting

Summaryinfo

A vulnerability was found in Cisco WebEX Connect IM. It has been classified as problematic. Impacted is an unknown function of the component Web Interface. The manipulation as part of Parameter leads to cross site scripting. This vulnerability is documented as CVE-2018-0276. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cisco WebEX Connect IM (Unified Communication Software) (unknown version). It has been rated as problematic. This issue affects an unknown code block of the component Web Interface. The manipulation as part of a Parameter leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

A vulnerability in Cisco WebEx Connect IM could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of an affected system. The vulnerability is due to insufficient input validation of some parameters that are passed to the web server of the affected system. An attacker could exploit this vulnerability by convincing a user to follow a malicious link or by intercepting a user request and injecting malicious code into the request. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected web interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvi07812.

The bug was discovered 04/18/2018. The weakness was released 04/19/2018 as cisco-sa-20180418-webcon as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2018-0276 since 11/27/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/30/2020). The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103921†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Unified Communication Software

Vendor

• Cisco

Name

• WebEX Connect IM

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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