CVE-2018-12889 : Exploit Details and Defense Strategies

A vulnerability was found in version 2.0.1 of CCN-lite, leading to a heap-based buffer overflow. The issue has been addressed by fixing memory management in the affected functions.

Understanding CVE-2018-12889

This CVE identifies a heap-based buffer overflow in CCN-lite version 2.0.1, impacting specific functions within the software.

What is CVE-2018-12889?

The vulnerability involves a heap-based buffer overflow in functions mkAddToRelayCacheRequest and ccnl_populate_cache due to the absence of the '\0' termination character when reading certain file types.

The Impact of CVE-2018-12889

The vulnerability could potentially result in heap corruption, posing a risk to the integrity and stability of the affected systems.

Technical Details of CVE-2018-12889

This section delves into the technical aspects of the CVE.

Vulnerability Description

The issue arises from a lack of proper memory management in the mkAddToRelayCacheRequest function of ccn-lite-ctrl.c, leading to a heap-based buffer overflow.

Affected Systems and Versions

Product: CCN-lite
Version: 2.0.1

Exploitation Mechanism

The vulnerability occurs when reading binary CCNx or NDN files without the necessary '\0' termination character, potentially allowing malicious actors to trigger heap corruption.

Mitigation and Prevention

Protective measures and actions to address the CVE.

Immediate Steps to Take

Update CCN-lite to the latest patched version to mitigate the vulnerability.
Implement proper input validation to prevent buffer overflows.

Long-Term Security Practices

Conduct regular security audits and code reviews to identify and address potential vulnerabilities.
Train developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Stay informed about security updates and patches released by the software vendor.