CVE-2020-3585 : What You Need to Know
Learn about CVE-2020-3585, a vulnerability in Cisco ASA & FTD Software allowing unauthorized access. Find mitigation steps and long-term security practices here.
A vulnerability in the TLS handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 1000 Series firewalls could allow an unauthenticated, remote attacker to gain access to sensitive information.
Understanding CVE-2020-3585
This CVE refers to a security vulnerability in Cisco ASA and FTD Software that could be exploited by attackers to access sensitive data.
What is CVE-2020-3585?
The vulnerability arises from improper implementation of countermeasures against the Bleichenbacher attack for RSA-based cipher suites, enabling attackers to perform chosen-ciphertext attacks.
The Impact of CVE-2020-3585
The vulnerability could allow attackers to decrypt previously captured TLS sessions, compromising the confidentiality of data transmitted between clients and the affected device.
Technical Details of CVE-2020-3585
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in Cisco ASA and FTD Software allows attackers to exploit the TLS handler to gain unauthorized access to sensitive information.
Affected Systems and Versions
- Product: Cisco Adaptive Security Appliance (ASA) Software
- Vendor: Cisco
- Versions: Not applicable (n/a)
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Base Score: 5.3 (Medium)
- Confidentiality Impact: Low
- Integrity Impact: None
- Privileges Required: None
- User Interaction: None
- Exploitation Scope: Unchanged
- Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Mitigation and Prevention
Protecting systems from CVE-2020-3585 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor network traffic for any suspicious activities related to TLS connections.
- Apply security patches and updates provided by Cisco to address the vulnerability.
Long-Term Security Practices
- Implement strong encryption protocols and regularly update security configurations.
- Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.
Patching and Updates
- Stay informed about security advisories from Cisco and promptly apply recommended patches to secure systems.