CVE-2021-1592 : Vulnerability Insights and Analysis

A vulnerability in Cisco UCS Manager software allows an authenticated attacker to trigger a denial of service (DoS) condition by manipulating SSH sessions, leading to service disruption.

Understanding CVE-2021-1592

This CVE involves a flaw in Cisco UCS Manager software that enables a DoS attack via SSH sessions, potentially halting access to the affected device.

What is CVE-2021-1592?

The vulnerability in Cisco UCS Manager software could be exploited by an authenticated attacker to disrupt service by overwhelming the system with SSH sessions.

The Impact of CVE-2021-1592

Successful exploitation of this vulnerability may result in a crash of internal Cisco UCS Manager software processes, leading to a temporary loss of access to the CLI and web UI.

Technical Details of CVE-2021-1592

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

Improper handling of SSH sessions in Cisco UCS Manager software permits attackers to cause a DoS situation through an influx of SSH connections.

Affected Systems and Versions

The Cisco Unified Computing System (Managed) is affected by this vulnerability, with a specific version impacted.

Exploitation Mechanism

Attackers with valid user credentials can exploit this vulnerability by initiating numerous SSH sessions, overwhelming the system.

Mitigation and Prevention

Here you will find strategies to address and prevent the exploitation of CVE-2021-1592.

Immediate Steps to Take

Implementing security measures to restrict the number of SSH sessions and monitoring SSH activities can help mitigate the risk of exploitation.

Long-Term Security Practices

Regularly updating the Cisco UCS Manager software, enforcing strong credential management, and conducting security audits are vital for long-term security.

Patching and Updates

Applying patches and security updates released by Cisco is crucial to remediate this vulnerability and enhance system resilience.