CVE-2019-15960 in Webex Meeting
Summary
by MITRE
A vulnerability in the Webex Network Recording Admin page of Cisco Webex Meetings could allow an authenticated, remote attacker to elevate privileges in the context of the affected page. To exploit this vulnerability, the attacker must be logged in as a low-level administrator. The vulnerability is due to insufficient access control validation. An attacker could exploit this vulnerability by submitting a crafted URL request to gain privileged access in the context of the affected page. A successful exploit could allow the attacker to elevate privileges in the Webex Recording Admin page, which could allow them to view or delete recordings that they would not normally be able to access.
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Analysis
by VulDB Data Team • 02/28/2024
This vulnerability exists within the Cisco Webex Meetings platform's Network Recording Admin page, representing a critical access control flaw that enables privilege escalation for authenticated users. The vulnerability is categorized as a weakness in access control mechanisms, specifically falling under CWE-284 which addresses improper access control. The flaw manifests when a low-level administrator with existing credentials attempts to exploit the system through a crafted URL request, bypassing intended security boundaries that should prevent unauthorized access to restricted recording functions.
The technical implementation of this vulnerability stems from inadequate validation of user permissions within the administrative interface. When an authenticated user submits a specially crafted URL request, the system fails to properly verify whether the requesting user possesses sufficient privileges to perform privileged actions within the recording administration context. This insufficient access control validation creates a pathway for privilege escalation where legitimate administrative users can assume higher-level permissions without proper authorization checks. The vulnerability specifically impacts the Webex Recording Admin page functionality and allows attackers to bypass normal access controls that should restrict users to their designated permission levels.
The operational impact of this vulnerability is significant for organizations relying on Cisco Webex Meetings for collaborative workspaces and recording management. An attacker with low-level administrative credentials could potentially access, view, or delete sensitive recordings that would normally be restricted to higher-privileged users. This represents a direct violation of the principle of least privilege and could lead to unauthorized data access, potential data loss, or compromise of confidential meeting content. The vulnerability affects the integrity and confidentiality of recording data within the Webex platform, potentially exposing organizations to regulatory compliance violations and data breach risks.
Organizations should immediately implement mitigations including applying the latest security patches from Cisco, reviewing and strengthening access control policies for administrative accounts, and conducting comprehensive audits of administrative user permissions. Network segmentation and monitoring of administrative access patterns can help detect anomalous behavior indicative of privilege escalation attempts. The vulnerability demonstrates the importance of proper input validation and access control implementation as outlined in the ATT&CK framework under privilege escalation techniques. Organizations should also consider implementing multi-factor authentication for administrative accounts and establishing stricter monitoring protocols for administrative interface access to prevent unauthorized privilege elevation attempts.