CVE-2017-3798: Cisco Unified Communications Manager XSS filter bypass in web interface

CVE-2017-3798 · Severity: medium · CVSS 6.1 · Published 2017-01-26

Cisco Unified Communications Manager, a system used for managing enterprise IP telephony and video calls, contains a security flaw in its web management interface. An attacker could trick a system administrator into clicking a malicious link, allowing the attacker to execute unauthorized scripts in the administrator's browser. This could lead to the theft of sensitive session information or unauthorized actions being performed within the management console.

Technologies: Cisco Unified Communications Manager. Vendors: Cisco.

Quick answers

Is CVE-2017-3798 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2017-3798 being exploited in the wild.
How severe is CVE-2017-3798?
Medium severity, with a CVSS score of 6.1, published 26 January 2017.
Which products and versions are affected?
Cisco Unified Communications Manager (CUCM) 11.0(1.10000.10), 11.5(1.10000.6).
Is there a fix for CVE-2017-3798?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2017-3798 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2017-3798?
Check whether you run Cisco Unified Communications Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the web-based management interface of Cisco Unified Communications Manager (CUCM). The flaw is caused by a failure to properly invoke XSS filter subsystems when specific parameters are present in a URL. An unauthenticated remote attacker can exploit this by persuading a user of the interface to click a specially crafted link. Successful exploitation allows the attacker to execute arbitrary script code in the context of the affected site, potentially leading to session hijacking or unauthorized configuration changes. Fixed releases include 11.5(1.12029.1), 12.0(0.98000.369), and subsequent versions.

Affected products

  • Cisco Unified Communications Manager (CUCM) 11.0(1.10000.10), 11.5(1.10000.6)

Timeline

  • 2017-01-18: advisory: Initial Cisco advisory release
  • 2017-01-26: disclosed: NVD publication date

References

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