CVE-2020-3283 : Security Advisory and Response
Learn about CVE-2020-3283, a high-severity vulnerability in Cisco Firepower Threat Defense Software that could allow remote attackers to trigger a denial of service condition on affected devices. Find mitigation steps and long-term security practices here.
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device.
Understanding CVE-2020-3283
This CVE involves a vulnerability in the SSL/TLS handler of Cisco Firepower Threat Defense Software, potentially leading to a DoS attack.
What is CVE-2020-3283?
The vulnerability in Cisco Firepower Threat Defense Software could be exploited by an attacker to cause a denial of service on the affected device by sending a crafted SSL/TLS message.
The Impact of CVE-2020-3283
- CVSS Base Score: 8.6 (High Severity)
- Attack Vector: Network
- Availability Impact: High
- The vulnerability could lead to a buffer underrun, causing the affected device to crash and reload.
Technical Details of CVE-2020-3283
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from a communication error between internal functions of the SSL/TLS handler in Cisco Firepower Threat Defense Software.
Affected Systems and Versions
- Affected Product: Cisco Firepower Threat Defense Software
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
- An unauthenticated, remote attacker can exploit the vulnerability by sending a specially crafted SSL/TLS message to the affected device.
Mitigation and Prevention
Protecting systems from CVE-2020-3283 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Implement network segmentation and access controls to limit exposure.
Patching and Updates
- Cisco may release patches or updates to address the vulnerability. Stay informed through official advisories and apply patches as soon as they are available.