CVE-2017-2822 : Vulnerability Insights and Analysis

Lexmark Perceptive Document Filters 11.3.0.2400 has a vulnerability that allows for code execution when a specially designed PDF file triggers a function call on a corrupted DCTStream, leading to the writing of user-controlled data to the stack.

Understanding CVE-2017-2822

This CVE involves a code execution vulnerability in Lexmark Perceptive Document Filters 11.3.0.2400 due to an issue in its image rendering feature.

What is CVE-2017-2822?

The vulnerability allows for code execution via a specially crafted PDF file triggering a function call on a corrupted DCTStream.
This results in user-controlled data being written to the stack, potentially leading to exploitation by malicious PDF files.

The Impact of CVE-2017-2822

CVSS Score: 7.5 (High)
Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High
Scope: Unchanged

Technical Details of CVE-2017-2822

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the image rendering functionality of Lexmark Perceptive Document Filters 11.3.0.2400.
A crafted PDF file can trigger a function call on a corrupted DCTStream, allowing user-controlled data to be written to the stack.

Affected Systems and Versions

Affected Product: Perceptive Document Filters
Vendor: Lexmark
Affected Version: 11.3.0.2400

Exploitation Mechanism

Exploitation occurs through the use of specially crafted PDF files that trigger the vulnerable function call on the corrupted DCTStream.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Disable the image rendering feature in Lexmark Perceptive Document Filters if not essential.
Implement network-level protections to filter out potentially malicious PDF files.
Regularly update security patches provided by Lexmark.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Educate users on safe PDF file handling practices to prevent exploitation.

Patching and Updates

Stay informed about security updates and patches released by Lexmark for Perceptive Document Filters.