CVE-2018-17828 : Security Advisory and Response

ZZIPlib 0.13.69 directory traversal vulnerability allows attackers to overwrite files via a zip file manipulation.

Understanding CVE-2018-17828

This CVE involves a directory traversal vulnerability in ZZIPlib 0.13.69, enabling attackers to replace files by exploiting a specific sequence within a zip file.

What is CVE-2018-17828?

The vulnerability in ZZIPlib 0.13.69 permits attackers to replace files of their choice by utilizing the '..' sequence within a zip file. The flaw originates from the unzzip_cat function in the bins/unzzipcat-mem.c file.

The Impact of CVE-2018-17828

This vulnerability can lead to unauthorized access and manipulation of files within a system, potentially resulting in data loss or corruption.

Technical Details of CVE-2018-17828

Vulnerability Description

The vulnerability in ZZIPlib 0.13.69 allows attackers to overwrite arbitrary files by exploiting the directory traversal flaw in the unzzip_cat function.

Affected Systems and Versions

Product: ZZIPlib 0.13.69
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can manipulate zip files containing the '..' sequence to replace files within the system.

Mitigation and Prevention

Immediate Steps to Take

Update ZZIPlib to a patched version that addresses the directory traversal vulnerability.
Avoid opening zip files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and libraries to mitigate known vulnerabilities.
Implement file integrity monitoring to detect unauthorized changes.

Patching and Updates

Apply security patches provided by ZZIPlib promptly to fix the directory traversal vulnerability.