CVE-2017-16386 Explained : Impact and Mitigation

Adobe Acrobat and Reader versions 2017.012.20098 and earlier, 2017.011.30066 and earlier, 2015.006.30355 and earlier, and 11.0.22 and earlier are affected by a vulnerability that could lead to data exposure.

Understanding CVE-2017-16386

This CVE identifies a buffer over-read vulnerability in Adobe Acrobat and Reader versions.

What is CVE-2017-16386?

The vulnerability arises from a calculation error in the XPS2PDF conversion engine, allowing access to sensitive data through an invalid pointer offset.

The Impact of CVE-2017-16386

Exploitation of this vulnerability could result in the exposure of sensitive data stored within the affected Adobe Acrobat and Reader versions.

Technical Details of CVE-2017-16386

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability is caused by a calculation error that accesses data beyond the intended buffer, specifically in the XPS2PDF conversion engine.

Affected Systems and Versions

Adobe Acrobat Reader 2017.012.20098 and earlier versions
Adobe Acrobat Reader 2017.011.30066 and earlier versions
Adobe Acrobat Reader 2015.006.30355 and earlier versions
Adobe Acrobat Reader 11.0.22 and earlier versions

Exploitation Mechanism

The vulnerability is exploited by using an invalid pointer offset that falls outside the acceptable range while accessing internal data structure fields.

Mitigation and Prevention

Protect your systems from CVE-2017-16386 with the following steps:

Immediate Steps to Take

Update Adobe Acrobat and Reader to the latest patched versions.
Implement network segmentation to limit exposure.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security training for employees to recognize and report suspicious activities.

Patching and Updates

Ensure timely installation of security updates and patches provided by Adobe for Acrobat and Reader.