CVE-2021-1267 : Vulnerability Insights and Analysis
Learn about CVE-2021-1267, a vulnerability in Cisco Firepower Management Center Software allowing remote attackers to cause a denial of service condition.
A vulnerability in the dashboard widget of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device due to improper restrictions on XML entities.
Understanding CVE-2021-1267
This CVE identifies a vulnerability in Cisco Firepower Management Center (FMC) Software that could lead to a denial of service (DoS) situation.
What is CVE-2021-1267?
The vulnerability in Cisco FMC Software allows an authenticated, remote attacker to exploit XML entities, causing a DoS condition by crafting an XML-based widget on the affected server.
The Impact of CVE-2021-1267
Exploiting this vulnerability could result in increased memory and CPU utilization, potentially leading to a DoS condition on the affected device.
Technical Details of CVE-2021-1267
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in the dashboard widget of Cisco Firepower Management Center (FMC) Software arises from improper restrictions on XML entities, allowing attackers to craft XML-based widgets that trigger a DoS condition.
Affected Systems and Versions
The affected product is the Cisco Firepower Management Center with all versions being susceptible to this vulnerability.
Exploitation Mechanism
An authenticated, remote attacker can exploit this vulnerability by creating an XML-based widget on the targeted server, causing increased memory and CPU utilization.
Mitigation and Prevention
To address CVE-2021-1267, immediate steps and long-term security practices are essential.
Immediate Steps to Take
It is recommended to apply the necessary patches and updates provided by Cisco to mitigate the vulnerability. Additionally, monitoring system resources for unusual activity can help detect exploitation attempts.
Long-Term Security Practices
Implementing network segmentation, restricting access to critical systems, and regularly updating security measures can enhance overall cybersecurity posture.
Patching and Updates
Regularly checking for security advisories from Cisco and promptly applying patches can effectively prevent exploitation of this vulnerability.