CVE-2017-8843 : Security Advisory and Response

An application crash and denial of service vulnerability in lrzip version 0.631 can be exploited by a specially crafted archive. This CVE was published on May 8, 2017.

Understanding CVE-2017-8843

This CVE involves a vulnerability in the join_pthread function in stream.c within the liblrzip.so library.

What is CVE-2017-8843?

The join_pthread function in stream.c in liblrzip.so in lrzip 0.631 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted archive.

The Impact of CVE-2017-8843

The vulnerability can lead to an application crash and denial of service when exploited by a specially crafted archive.

Technical Details of CVE-2017-8843

This section provides more technical insights into the CVE.

Vulnerability Description

A specially crafted archive can trigger an application crash and denial of service by leveraging the join_pthread function in stream.c within the liblrzip.so library in lrzip version 0.631.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: lrzip 0.631

Exploitation Mechanism

The vulnerability can be exploited by using a specially crafted archive to trigger the join_pthread function in stream.c within the liblrzip.so library.

Mitigation and Prevention

Protecting systems from CVE-2017-8843 requires specific actions to mitigate the risks.

Immediate Steps to Take

Update lrzip to a non-vulnerable version if available.
Avoid opening untrusted or suspicious archives.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement secure coding practices to prevent similar issues in the future.
Conduct regular security assessments and audits.

Patching and Updates

Ensure that lrzip is regularly updated to the latest version to address any security vulnerabilities.