CVE-2019-15142 : Vulnerability Insights and Analysis

DjVuLibre 3.5.27, specifically in the DjVmDir.cpp file within the DJVU reader component, contains a vulnerability that could lead to a denial-of-service condition. Attackers can exploit this vulnerability by crafting a malicious DJVU file, resulting in an application crash.

Understanding CVE-2019-15142

This CVE identifies a vulnerability in DjVuLibre 3.5.27 that can be exploited to cause a denial-of-service condition.

What is CVE-2019-15142?

In DjVuLibre 3.5.27, a vulnerability exists in the DjVmDir.cpp file within the DJVU reader component. Attackers can trigger a denial-of-service condition by creating a specially crafted DJVU file that causes an application crash.

The Impact of CVE-2019-15142

The vulnerability allows attackers to exploit a heap-based buffer over-read, leading to a denial-of-service condition and application crash.

Technical Details of CVE-2019-15142

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in DjVuLibre 3.5.27 allows attackers to create a denial-of-service condition by triggering a heap-based buffer over-read in the GStringRep::strdup function within the libdjvu/GString.cpp file.

Affected Systems and Versions

Product: DjVuLibre 3.5.27
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by maliciously crafting a DJVU file, causing the application to crash.

Mitigation and Prevention

Protecting systems from CVE-2019-15142 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security updates provided by the vendor.
Avoid opening or accessing suspicious DJVU files.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Implement network security measures to detect and prevent malicious activities.

Patching and Updates

Check for security advisories from the vendor and apply patches promptly to mitigate the vulnerability.