CVE-2019-12293 : Security Advisory and Response

A heap-based buffer over-read vulnerability exists in versions of Poppler up to 0.76.1, allowing exploitation by manipulating data in the JPXStream::init function within the JPEG2000Stream.cc file.

Understanding CVE-2019-12293

This CVE involves a specific vulnerability in the Poppler software.

What is CVE-2019-12293?

This vulnerability is a heap-based buffer over-read in the JPXStream::init function within the JPEG2000Stream.cc file in Poppler versions up to 0.76.1. It can be triggered by inconsistent heights or widths in the data.

The Impact of CVE-2019-12293

The vulnerability could be exploited by an attacker to potentially execute arbitrary code or cause a denial of service (DoS) condition on the affected system.

Technical Details of CVE-2019-12293

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability is a heap-based buffer over-read in the JPXStream::init function within the JPEG2000Stream.cc file due to inconsistent heights or widths in the data.

Affected Systems and Versions

Poppler versions up to 0.76.1 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by manipulating data in the JPXStream::init function within the JPEG2000Stream.cc file, specifically by introducing inconsistent heights or widths.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

Update Poppler to version 0.76.1 or later to mitigate the vulnerability.
Monitor vendor advisories and security mailing lists for patches and updates.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Apply the latest security updates and patches provided by the software vendor to address this vulnerability.