CVE-2019-1945 : What You Need to Know

Cisco Adaptive Security Appliance Smart Tunnel Vulnerabilities

Understanding CVE-2019-1945

Multiple vulnerabilities in the smart tunnel feature of Cisco Adaptive Security Appliance (ASA) software could allow a local attacker to escalate privileges or load malicious files during tunnel setup.

What is CVE-2019-1945?

The smart tunnel feature of Cisco ASA is impacted by vulnerabilities that enable a local attacker with authenticated access to elevate privileges or load malicious files during tunnel establishment.

The Impact of CVE-2019-1945

These vulnerabilities could allow a local attacker to escalate privileges to the root user or load malicious library files during the tunnel setup process. No public announcements or malicious exploits have been reported.

Technical Details of CVE-2019-1945

Cisco ASA Smart Tunnel Vulnerabilities

Vulnerability Description

Vulnerability Type: CWE-20
The smart tunnel functionality of Cisco ASA is susceptible to privilege escalation and loading of malicious files during tunnel setup.

Affected Systems and Versions

Product: Cisco Adaptive Security Appliance (ASA) Software
Vendor: Cisco
Versions Affected: < 9.8.4.7 (unspecified version)

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Impact: High severity with confidentiality, integrity, and availability impacts

Mitigation and Prevention

Protecting Against CVE-2019-1945

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor Cisco's security advisories for any new information or patches related to these vulnerabilities.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights.
Regularly review and update security configurations to mitigate potential risks.

Patching and Updates

Ensure that affected systems are updated to versions beyond 9.8.4.7 to mitigate the vulnerabilities.