CVE-2018-11762 : Vulnerability Insights and Analysis

Apache Tika versions 0.9 to 1.18 were affected by a Zip Slip Vulnerability that could lead to file overwrite.

Understanding CVE-2018-11762

In Apache Tika versions 0.9 to 1.18, a specific scenario could result in the overwriting of files by the tika-app.

What is CVE-2018-11762?

The vulnerability in Apache Tika versions 0.9 to 1.18 allowed for file overwriting when certain conditions were met during file extraction.

The Impact of CVE-2018-11762

The vulnerability could potentially lead to the unintended overwriting of files, posing a risk to data integrity and security.

Technical Details of CVE-2018-11762

Apache Tika's tika-app was susceptible to a Zip Slip Vulnerability, allowing for file overwrite under specific conditions.

Vulnerability Description

In Apache Tika versions 0.9 to 1.18, failure to specify an extract directory and encountering an embedded file with an absolute path could result in file overwriting by tika-app.

Affected Systems and Versions

Product: Apache Tika
Vendor: Apache Software Foundation
Versions Affected: 0.9 to 1.18

Exploitation Mechanism

The vulnerability exploited a scenario where a user did not provide an extract directory and an input file contained an embedded file with an absolute path, leading to file overwrite.

Mitigation and Prevention

Immediate Steps to Take:

Update Apache Tika to a non-vulnerable version.
Avoid processing files with unknown or untrusted sources.

Long-Term Security Practices

Regularly monitor and update software dependencies.
Implement file validation checks to prevent path traversal vulnerabilities.

Patching and Updates

Apply patches provided by Apache Software Foundation to address the Zip Slip Vulnerability in Apache Tika.