CVE-2017-2794 : Exploit Details and Defense Strategies

AntennaHouse DMC HTMLFilter, in its utilization by MarkLogic 8.0-6, contains a stack-based buffer overflow vulnerability in the DHFSummary feature, allowing for remote code execution.

Understanding CVE-2017-2794

This CVE involves a critical vulnerability in AntennaHouse DMC HTMLFilter when used with MarkLogic 8.0-6, potentially leading to arbitrary code execution.

What is CVE-2017-2794?

AntennaHouse DMC HTMLFilter, integrated with MarkLogic 8.0-6, is susceptible to a stack-based buffer overflow flaw in the DHFSummary component.
Exploitation of this vulnerability involves sending a specially crafted PPT file, triggering stack corruption and enabling the execution of unauthorized code.

The Impact of CVE-2017-2794

CVSS Base Score: 8.3 (High)
Severity: High
Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: Required
Scope: Changed
Confidentiality, Integrity, and Availability Impact: High
This vulnerability poses a significant risk as it allows attackers to execute arbitrary code remotely.

Technical Details of CVE-2017-2794

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

Vulnerability Description

The vulnerability lies in the DHFSummary functionality of AntennaHouse DMC HTMLFilter when utilized by MarkLogic 8.0-6.
A specially crafted PPT file can exploit this flaw, leading to stack corruption and subsequent arbitrary code execution.

Affected Systems and Versions

Affected Product: DMC HTMLFilter
Vendor: Antenna House
Affected Version: as shipped with MarkLogic 8.0-6

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a malicious PPT file, triggering the stack-based buffer overflow and enabling the execution of unauthorized code.

Mitigation and Prevention

Protecting systems from CVE-2017-2794 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the DHFSummary feature in AntennaHouse DMC HTMLFilter to mitigate the vulnerability.
Implement network-level controls to restrict access to potentially malicious PPT files.

Long-Term Security Practices

Regularly update and patch AntennaHouse DMC HTMLFilter to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Apply patches and updates provided by Antenna House to address the stack-based buffer overflow vulnerability in DMC HTMLFilter.