CVE-2019-1787 : Vulnerability Insights and Analysis

Clam AntiVirus (ClamAV) Software versions 0.101.1 and earlier are affected by a vulnerability in the handling of Portable Document Format (PDF) files, potentially leading to a denial of service (DoS) attack.

Understanding CVE-2019-1787

This CVE identifies a specific vulnerability in Clam AntiVirus (ClamAV) Software versions 0.101.1 and earlier related to the processing of PDF files.

What is CVE-2019-1787?

The vulnerability in CVE-2019-1787 affects the scanning feature of Clam AntiVirus (ClamAV) Software versions 0.101.1 and earlier. It stems from inadequate handling of data within the device's buffer while indexing remaining file data, specifically in the context of PDF files.

The Impact of CVE-2019-1787

The vulnerability could be exploited by a remote attacker without authentication, potentially resulting in a denial of service (DoS) situation on the targeted device. Successful exploitation could lead to a heap buffer out-of-bounds read, triggering a crash and causing a DoS condition.

Technical Details of CVE-2019-1787

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from insufficient data handling within the device's buffer during the indexing of remaining file data, particularly in relation to PDF files.

Affected Systems and Versions

Product: ClamAV
Vendor: Cisco
Versions Affected: 0.101.1 and earlier

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Privileges Required: None
User Interaction: None
Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigation and Prevention

To address CVE-2019-1787, it is crucial to implement immediate steps and adopt long-term security practices to enhance protection.

Immediate Steps to Take

Update Clam AntiVirus (ClamAV) Software to a patched version that addresses the vulnerability.
Monitor vendor advisories and security mailing lists for updates and patches.

Long-Term Security Practices

Regularly update antivirus software and security patches to mitigate potential vulnerabilities.
Implement network security measures to detect and prevent unauthorized access.

Patching and Updates

Apply security updates and patches provided by Cisco for ClamAV to remediate the vulnerability.