CVE-2020-3317 : Vulnerability Insights and Analysis
Learn about CVE-2020-3317, a vulnerability in Cisco Firepower Threat Defense Software that could allow a remote attacker to crash Snort instances, leading to a denial of service (DoS) condition. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in the ssl_inspection component of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to crash Snort instances.
Understanding CVE-2020-3317
What is CVE-2020-3317?
This CVE refers to a vulnerability in Cisco Firepower Threat Defense (FTD) Software that could be exploited by a remote attacker to crash Snort instances, leading to a denial of service (DoS) condition.
The Impact of CVE-2020-3317
The vulnerability could result in a DoS condition by allowing an attacker to crash a Snort instance through a malformed TLS packet.
Technical Details of CVE-2020-3317
Vulnerability Description
The vulnerability is caused by insufficient input validation in the ssl_inspection component of Cisco FTD Software.
Affected Systems and Versions
- Product: Cisco Firepower Threat Defense Software
- Vendor: Cisco
- Affected Version: n/a
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Base Score: 5.8 (Medium)
- Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security patches provided by Cisco.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Implement network segmentation to limit the impact of potential attacks.
- Conduct regular security assessments and audits.
Patching and Updates
- Refer to the Cisco Security Advisory for specific patch details and instructions.