CVE-2018-11797 : Vulnerability Insights and Analysis

Apache PDFBox versions 1.8.0 to 1.8.15 and 2.0.0RC1 to 2.0.11 are affected by a DoS vulnerability due to parsing the page tree in certain PDF files.

Understanding CVE-2018-11797

What is CVE-2018-11797?

In Apache PDFBox versions 1.8.0 to 1.8.15 and 2.0.0RC1 to 2.0.11, encountering specific PDF file characteristics can trigger a prolonged computation process, leading to a Denial of Service (DoS) vulnerability.

The Impact of CVE-2018-11797

The vulnerability allows attackers to exploit PDF files to cause excessive computational load, potentially disrupting services and causing system unresponsiveness.

Technical Details of CVE-2018-11797

Vulnerability Description

A carefully crafted PDF file can initiate a significantly long computation process when parsing the page tree in Apache PDFBox versions 1.8.0 to 1.8.15 and 2.0.0RC1 to 2.0.11.

Affected Systems and Versions

Product: Apache PDFBox
Vendor: Apache Software Foundation
Affected Versions: 1.8.0 to 1.8.15, 2.0.0RC1 to 2.0.11

Exploitation Mechanism

Attackers can exploit this vulnerability by creating PDF files with specific characteristics that trigger prolonged computations, leading to a DoS condition.

Mitigation and Prevention

Immediate Steps to Take

Update Apache PDFBox to the latest patched version.
Exercise caution when handling PDF files from untrusted sources.
Monitor system performance for any signs of excessive resource consumption.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network and system monitoring to detect unusual activities.
Educate users on safe handling of PDF files and potential risks.

Patching and Updates

Ensure timely installation of security updates and patches released by Apache PDFBox to address the DoS vulnerability.