CVE-2018-12691 Explained : Impact and Mitigation

A time-of-check to time-of-use (TOCTOU) race condition in org.onosproject.acl in ONOS v1.13 and older versions allows attackers to bypass network access control via data plane packet injection.

Understanding CVE-2018-12691

This CVE involves a vulnerability in the access control application of ONOS, potentially enabling unauthorized network access.

What is CVE-2018-12691?

The TOCTOU race condition in org.onosproject.acl in ONOS v1.13 and earlier versions permits attackers to circumvent network access control by injecting data plane packets.

The Impact of CVE-2018-12691

The vulnerability could lead to unauthorized network access, potentially compromising network security and integrity.

Technical Details of CVE-2018-12691

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The TOCTOU race condition in org.onosproject.acl in ONOS v1.13 and earlier versions allows attackers to bypass network access control through data plane packet injection.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: ONOS v1.13 and older

Exploitation Mechanism

Attackers exploit the TOCTOU race condition to inject data plane packets, evading network access control mechanisms.

Mitigation and Prevention

Protecting systems from CVE-2018-12691 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update ONOS to a patched version that addresses the TOCTOU race condition.
Implement network segmentation to limit the impact of potential unauthorized access.

Long-Term Security Practices

Regularly monitor network traffic for anomalies that may indicate unauthorized access attempts.
Conduct security audits to identify and address vulnerabilities in network access control mechanisms.

Patching and Updates

Apply patches provided by ONOS to fix the TOCTOU race condition and enhance network access control security.