CVE-2019-12652 : Vulnerability Insights and Analysis
Learn about CVE-2019-12652, a vulnerability in Cisco Catalyst 4000 Series Switches that could lead to a denial of service (DoS) scenario. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in the packet processing function of Cisco IOS Software for Cisco Catalyst 4000 Series Switches could lead to a denial of service (DoS) scenario. Attackers could exploit this by sending crafted TCP streams to the affected device.
Understanding CVE-2019-12652
This CVE involves a vulnerability in Cisco Catalyst 4000 Series Switches that could result in a DoS situation.
What is CVE-2019-12652?
The vulnerability stems from improper resource allocation when processing TCP packets targeting specific Cisco Catalyst 4000 Series Switches. Attackers can trigger this by sending carefully crafted TCP streams to the device, depleting buffer resources and disrupting control and management plane protocols.
The Impact of CVE-2019-12652
- CVSS Base Score: 8.6 (High Severity)
- Attack Vector: Network
- Availability Impact: High
- This vulnerability could lead to a DoS scenario on the affected device.
Technical Details of CVE-2019-12652
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Cisco IOS Software for Cisco Catalyst 4000 Series Switches allows unauthenticated remote attackers to cause a DoS condition by exploiting the packet processing function.
Affected Systems and Versions
- Affected Product: Cisco IOS 15.0(1)XO1
- Vendor: Cisco
- Version: Unspecified
Exploitation Mechanism
Attackers can exploit this vulnerability by sending carefully crafted TCP streams to the affected device, causing it to run out of buffer resources and disrupting its functioning.
Mitigation and Prevention
To address CVE-2019-12652, follow these mitigation strategies:
Immediate Steps to Take
- Apply vendor patches and updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all network devices.
- Conduct security training for staff to recognize and respond to potential threats.
Patching and Updates
- Stay informed about security advisories from Cisco.
- Apply recommended patches and updates to mitigate the vulnerability.