CVE-2018-11496 Explained : Impact and Mitigation

Long Range Zip (lrzip) 0.631 has a use-after-free vulnerability in the read_stream function in stream.c, caused by missing size validation in the decompress_file function in lrzip.c.

Understanding CVE-2018-11496

This CVE entry highlights a specific vulnerability in the lrzip software version 0.631.

What is CVE-2018-11496?

The vulnerability in Long Range Zip (lrzip) 0.631 allows for a use-after-free scenario due to inadequate size validation in the decompress_file function.

The Impact of CVE-2018-11496

This vulnerability could be exploited by an attacker to potentially execute arbitrary code or cause a denial of service (DoS) on systems running the affected lrzip version.

Technical Details of CVE-2018-11496

This section delves into the technical aspects of the CVE.

Vulnerability Description

The use-after-free vulnerability in the read_stream function in stream.c of lrzip 0.631 is a critical security issue that can lead to exploitation.

Affected Systems and Versions

Affected Version: lrzip 0.631
Systems: Any system running lrzip 0.631 is vulnerable to this issue.

Exploitation Mechanism

The vulnerability arises due to the lack of proper size validation in the decompress_file function within lrzip.c, enabling attackers to manipulate memory and potentially execute malicious code.

Mitigation and Prevention

Protecting systems from CVE-2018-11496 requires immediate action and long-term security measures.

Immediate Steps to Take

Update lrzip to a patched version or apply security fixes provided by the vendor.
Monitor for any unusual system behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement strong access controls and network segmentation to limit the impact of potential breaches.

Patching and Updates

Stay informed about security updates for lrzip and promptly apply any patches released by the vendor to address this vulnerability.