Cisco Unity Connection 12.5 Single Sign-On cross site scripting

Summaryinfo

A vulnerability was found in Cisco Unity Connection 12.5. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Single Sign-On. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2019-1685. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco Unity Connection 12.5 (Unified Communication Software). This issue affects an unknown code block of the component Single Sign-On. The manipulation with an unknown input 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 the Security Assertion Markup Language (SAML) single sign-on (SSO) interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. Version 12.5 is affected.

The bug was discovered 02/20/2019. The weakness was disclosed 02/21/2019 as cisco-sa-20190220-cuc-rxss as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2019-1685 since 12/06/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. 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 07/19/2023). 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316373 (Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability(cisco-sa-20190220-cuc-rxss)).

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

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Productinfo

Type

• Unified Communication Software

Vendor

• Cisco

Name

• Unity Connection

Version

• 12.5

License

• commercial

Website

• Vendor: https://www.cisco.com/

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