CVE-2019-15966 Explained : Impact and Mitigation

Cisco TelePresence Advanced Media Gateway has a vulnerability that could be exploited by an authenticated, remote attacker to cause a denial of service (DoS) on the affected device due to the absence of input validation in the web application.

Understanding CVE-2019-15966

This CVE involves a vulnerability in the web application of Cisco TelePresence Advanced Media Gateway that allows an attacker to trigger a DoS condition on the affected device.

What is CVE-2019-15966?

The vulnerability in Cisco TelePresence Advanced Media Gateway's web application enables an authenticated remote attacker to execute a DoS attack by exploiting the lack of input validation.

The Impact of CVE-2019-15966

CVSS Base Score: 7.7 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
Availability Impact: High
Scope: Changed
Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Technical Details of CVE-2019-15966

The following technical details provide insight into the vulnerability and its implications:

Vulnerability Description

The vulnerability in the web application of Cisco TelePresence Advanced Media Gateway allows an attacker to disrupt services on the device, leading to a DoS condition.

Affected Systems and Versions

Affected Product: Cisco TelePresence Advanced Media Gateway
Vendor: Cisco
Affected Version: 1.1

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to send a carefully crafted authenticated HTTP request to the device, causing services to stop and rendering the device nonfunctional.

Mitigation and Prevention

To address CVE-2019-15966, consider the following mitigation strategies:

Immediate Steps to Take

Implement network segmentation to limit access to vulnerable devices.
Monitor network traffic for any suspicious activity targeting the affected device.

Long-Term Security Practices

Regularly update and patch all software and firmware to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

As Cisco TelePresence Advanced Media Gateway is no longer receiving software updates, refer to the End-of-Sale and End-of-Life information provided by Cisco for alternative solutions.