CVE-2021-34758 : Security Advisory and Response

A vulnerability in the memory management of Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software could allow an authenticated, local attacker to corrupt a shared memory segment, resulting in a denial of service (DoS) condition. This article provides insights into CVE-2021-34758, its impact, technical details, and mitigation strategies.

Understanding CVE-2021-20657

This section delves into the specifics of the CVE-2021-34758 vulnerability.

What is CVE-2021-34758?

CVE-2021-34758 is a vulnerability in Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software that enables a local attacker to corrupt shared memory, leading to a DoS situation due to insufficient access controls.

The Impact of CVE-2021-34758

The impact of this vulnerability is rated as medium with a base score of 4.4. It can result in a denial of service condition on affected Cisco devices potentially exploited by local authenticated attackers.

Technical Details of CVE-2021-34758

This section outlines the technical aspects of CVE-2021-34758.

Vulnerability Description

The vulnerability arises from inadequate access controls to shared memory resources, allowing attackers to reload affected devices by corrupting memory segments.

Affected Systems and Versions

The vulnerability affects Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software versions.

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating shared memory segments on impacted devices, causing them to reload upon successful exploitation.

Mitigation and Prevention

This section provides guidance on mitigating and preventing CVE-2021-34758.

Immediate Steps to Take

Immediately apply patches and security updates released by Cisco to address the vulnerability and prevent potential DoS incidents.

Long-Term Security Practices

Enforce strict access controls, conduct regular security audits, and train personnel on best security practices to enhance overall system security.

Patching and Updates

Regularly monitor vendor advisories and apply security patches promptly to ensure the protection of Cisco TelePresence Collaboration Endpoint and RoomOS Software.