CVE-2017-12373 : Security Advisory and Response

A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series devices could allow unauthorized access to sensitive information through a ROBOT attack.

Understanding CVE-2017-12373

This CVE involves a flaw in the TLS protocol implementation of Cisco ASA 5500 products, potentially enabling attackers to decrypt captured TLS sessions.

What is CVE-2017-12373?

The vulnerability in Cisco ASA 5500 Series devices allows remote attackers to exploit the TLS protocol implementation, leading to potential unauthorized access to sensitive data.

The Impact of CVE-2017-12373

Attackers can gain access to sensitive information through cryptographic operations.
The vulnerability could result in the decryption of previously captured TLS sessions.

Technical Details of CVE-2017-12373

This section provides detailed technical information about the CVE.

Vulnerability Description

The flaw in the TLS protocol implementation of legacy Cisco ASA 5500 Series devices exposes them to the ROBOT attack, potentially compromising sensitive data.

Affected Systems and Versions

Product: Cisco legacy ASA 5500 products TLS protocol implementation
Versions: Cisco legacy ASA 5500 products TLS protocol implementation

Exploitation Mechanism

Attackers can iteratively query a server with a vulnerable TLS stack to decrypt captured TLS sessions.

Mitigation and Prevention

Protecting systems from CVE-2017-12373 is crucial to prevent unauthorized access and data breaches.

Immediate Steps to Take

Apply security patches provided by Cisco promptly.
Monitor network traffic for any suspicious activity.
Implement strong access controls and authentication mechanisms.

Long-Term Security Practices

Regularly update and patch all software and firmware on network devices.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Stay informed about security advisories from Cisco and apply relevant patches immediately.