CVE-2020-19471 Explained : Impact and Mitigation

An issue has been found in function DCTStream::decodeImage in PDF2JSON 0.70 that allows attackers to cause a Denial of Service due to an invalid read of size 4.

Understanding CVE-2020-19471

This CVE identifies a vulnerability in PDF2JSON 0.70 that can be exploited to trigger a Denial of Service attack.

What is CVE-2020-19471?

The vulnerability in function DCTStream::decodeImage in PDF2JSON 0.70 enables attackers to execute a Denial of Service attack by performing an invalid read operation of size 4.

The Impact of CVE-2020-19471

The exploitation of this vulnerability can lead to a Denial of Service condition, potentially disrupting the availability of the affected system.

Technical Details of CVE-2020-19471

PDF2JSON 0.70 is susceptible to the following:

Vulnerability Description

The vulnerability allows attackers to trigger a Denial of Service by conducting an invalid read operation of size 4 in the DCTStream::decodeImage function.

Affected Systems and Versions

Product: PDF2JSON 0.70
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the DCTStream::decodeImage function in PDF2JSON 0.70 to perform an invalid read operation of size 4.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2020-19471:

Immediate Steps to Take

Disable or restrict access to the vulnerable function in PDF2JSON 0.70.
Monitor network traffic for any suspicious activity that could indicate an ongoing attack.

Long-Term Security Practices

Regularly update PDF2JSON to the latest version to patch known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Apply patches or security updates provided by the PDF2JSON vendor to mitigate the vulnerability and enhance system security.