CVE-2019-1962 : Vulnerability Insights and Analysis
Learn about CVE-2019-1962, a Cisco NX-OS Software vulnerability allowing DoS attacks. Find out affected systems, exploitation details, and mitigation steps.
A vulnerability in Cisco NX-OS Software's Cisco Fabric Services component could allow unauthorized remote attackers to cause denial of service (DoS) situations on affected systems.
Understanding CVE-2019-1962
This CVE identifies a flaw in Cisco NX-OS Software that could lead to process crashes and DoS conditions.
What is CVE-2019-1962?
The vulnerability arises from inadequate validation of TCP packets during the processing of Cisco Fabric Services over IP (CFSoIP) feature.
The Impact of CVE-2019-1962
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Base Score: 8.6 (High)
- Scope: Changed
- Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Technical Details of CVE-2019-1962
This section provides detailed technical information about the vulnerability.
Vulnerability Description
- Exploitable by unauthorized remote attackers
- Can cause process crashes and DoS situations
Affected Systems and Versions
- Product: Cisco Unified Computing System (Managed)
- Vendor: Cisco
- Versions Affected: < 8.4(1)
Exploitation Mechanism
- Attacker transmits a malicious TCP packet for Cisco Fabric Services to a vulnerable device
- Successful exploit triggers process crashes and device reload
Mitigation and Prevention
Steps to address and prevent exploitation of CVE-2019-1962.
Immediate Steps to Take
- Ensure CFSoIP feature is disabled (default setting)
- Monitor for any unusual network activity
Long-Term Security Practices
- Regularly update and patch Cisco NX-OS Software
- Implement network segmentation and access controls
Patching and Updates
- Apply patches provided by Cisco to address the vulnerability