CVE-2017-16396 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 due to incorrect length values in the TIFF processing module, allowing for buffer access.

Understanding CVE-2017-16396

This CVE identifies a critical vulnerability in Adobe Acrobat and Reader that could be exploited by attackers to execute arbitrary code.

What is CVE-2017-16396?

The vulnerability arises from an incorrect length value in the TIFF processing module, leading to buffer access. Attackers can exploit this flaw by manipulating accessible memory to execute arbitrary code.

The Impact of CVE-2017-16396

Attackers can exploit the vulnerability to execute arbitrary code on affected systems.
Successful exploitation could lead to a complete compromise of the system.

Technical Details of CVE-2017-16396

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 susceptible to this vulnerability.

Vulnerability Description

The vulnerability is a result of a buffer access issue with an incorrect length value in the TIFF processing module.

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

Crafted input causes a mismatch between allocated buffer size and access allowed by computation.
Attackers can exploit this mismatch to execute arbitrary code.

Mitigation and Prevention

Immediate Steps to Take:

Update Adobe Acrobat and Reader to the latest patched versions.
Be cautious of opening PDF files from untrusted sources. Long-Term Security Practices:
Regularly update software and apply security patches.
Implement security awareness training to educate users on safe computing practices.
Use additional security measures like endpoint protection and network monitoring.
Consider restricting access to sensitive systems and data.

Patching and Updates

Adobe has released patches to address this vulnerability.
Ensure all systems running affected versions of Adobe Acrobat and Reader are updated with the latest security patches.