CVE-2019-1764 : Exploit Details and Defense Strategies

A vulnerability in the web-based management interface of SIP Software for Cisco IP Phone 8800 Series could lead to a cross-site request forgery (CSRF) attack, potentially exploited by an unauthorized remote attacker.

Understanding CVE-2019-1764

This CVE identifies a vulnerability in Cisco IP Phone 8800 Series that could allow CSRF attacks through the web-based management interface.

What is CVE-2019-1764?

The vulnerability in the SIP Software for Cisco IP Phone 8800 Series could be exploited by convincing an authenticated user to click on a malicious link, granting the attacker unauthorized access to the device.

The Impact of CVE-2019-1764

The vulnerability poses a high risk with a CVSS base score of 8.1, allowing attackers to perform unauthorized actions on the targeted device using the user's privileges.

Technical Details of CVE-2019-1764

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The inadequate CSRF protections in the web-based management interface of the affected Cisco IP Phone 8800 Series devices lead to this vulnerability.

Affected Systems and Versions

Cisco Wireless IP Phone 8821 and 8821-EX running SIP Software release prior to 11.0(5)
Cisco IP Conference Phone 8832 and other models within the IP Phone 8800 Series running SIP Software release prior to 12.5(1)SR1

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to trick an authenticated user into clicking on a carefully crafted link, enabling unauthorized actions on the device.

Mitigation and Prevention

Protecting against and mitigating the effects of CVE-2019-1764 is crucial.

Immediate Steps to Take

Update affected devices to versions 11.0(5) or higher for Wireless IP Phone 8821 and 8821-EX, and 12.5(1)SR1 or higher for IP Conference Phone 8832 and other models.
Educate users about the risks of clicking on unknown links.

Long-Term Security Practices

Regularly monitor and update security patches on all Cisco IP Phone 8800 Series devices.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure timely installation of security patches and updates provided by Cisco to address the CSRF vulnerability.