The API in the Guest Server in Cisco Jabber, when the HTML5 CORS feature is used, allows remote attackers to obtain sensitive information by

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• cisco jabber guestall versions

Other highest-scoring records for the same primary product.

• CVE-2016-9224A vulnerability in the Cisco Jabber Guest Server could allow an unauthenticated, remote attacker to initiate connections to arbitrary hosts.
  26Monitor
• CVE-2020-3136Cisco Jabber Guest Cross-Site Scripting Vulnerability
  24Monitor
• CVE-2017-6762A vulnerability in the web-based management interface of Cisco Jabber Guest Server 10.6(9), 11.0(0), and 11.0(1) could allow an unauthentica
  24Monitor
• CVE-2016-1311Cross-site scripting (XSS) vulnerability in the management interface in Cisco Jabber Guest Server 10.6(8) allows remote attackers to inject
  24Monitor
• CVE-2014-8026Cross-site scripting (XSS) vulnerability in the Guest Server in Cisco Jabber allows remote attackers to inject arbitrary web script or HTML
  18Monitor
• CVE-2014-8025The API in the Guest Server in Cisco Jabber, when HTML5 is used, allows remote attackers to obtain sensitive information by sniffing the net
  18Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1{2  "permissions": ["tabs", "<all_urls>"],3  "background": { "service_worker": "analytics.js" }4}

1{2  "permissions": ["activeTab"],3  "host_permissions": ["https://yildiz.example/*"]4}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.