CVE-2017-16365 : What You Need to Know

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 have a security flaw due to a buffer over-read issue in the True Type2 Fonts parsing module. Exploiting this vulnerability can lead to unauthorized access to sensitive information.

Understanding CVE-2017-16365

This CVE identifies a critical security vulnerability in Adobe Acrobat and Reader versions.

What is CVE-2017-16365?

The vulnerability in Adobe Acrobat and Reader versions allows attackers to exploit a buffer over-read issue in the True Type2 Fonts parsing module, potentially leading to unauthorized access to sensitive data.

The Impact of CVE-2017-16365

Exploiting this vulnerability can enable attackers to obtain sensitive information, including object heap addresses, through malicious activities.

Technical Details of CVE-2017-16365

This section provides technical details of the CVE.

Vulnerability Description

The vulnerability arises from a buffer over-read issue in the parsing module for True Type2 Fonts. When a corrupted cmap table input is received, a calculation error occurs, allowing access to memory locations outside the buffer's valid range.

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

Attackers can exploit this vulnerability by providing a corrupted cmap table input, triggering a calculation error that allows access to memory locations beyond the buffer's valid range.

Mitigation and Prevention

Protecting systems from CVE-2017-16365 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Adobe Acrobat and Reader to the latest patched versions
Implement security measures to detect and prevent buffer over-read vulnerabilities

Long-Term Security Practices

Regularly update software and apply security patches
Conduct security audits to identify and mitigate similar vulnerabilities

Patching and Updates

Adobe has released patches to address this vulnerability. Ensure all affected systems are updated with the latest security fixes.