CVE-2019-9545 : What You Need to Know

A vulnerability was found in Poppler 0.74.0 that could lead to a Denial of Service attack or other unspecified impacts by exploiting a crafted pdf file.

Understanding CVE-2019-9545

This CVE involves a vulnerability in Poppler 0.74.0 that allows for a Denial of Service attack through a crafted pdf file.

What is CVE-2019-9545?

The JBIG2Stream::readTextRegion() function in JBIG2Stream.cc can be recursively called by exploiting a crafted pdf file using tools like pdfimages binary, potentially resulting in a Denial of Service attack (Segmentation fault) or other unspecified impacts.

The Impact of CVE-2019-9545

The vulnerability could lead to a Denial of Service attack or other unspecified impacts, affecting the stability and security of systems utilizing Poppler 0.74.0.

Technical Details of CVE-2019-9545

This section provides technical details about the vulnerability.

Vulnerability Description

An issue in Poppler 0.74.0 allows for a recursive function call in JBIG2Stream::readTextRegion(), triggered by a crafted pdf file, potentially causing a Denial of Service (Segmentation fault) or other impacts.

Affected Systems and Versions

Product: N/A
Vendor: N/A
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Exploitation Mechanism

The vulnerability can be exploited by sending a crafted pdf file to tools like the pdfimages binary, triggering the recursive function call in JBIG2Stream::readTextRegion.

Mitigation and Prevention

To address CVE-2019-9545, follow these mitigation steps:

Immediate Steps to Take

Update Poppler to a non-vulnerable version.
Avoid opening untrusted pdf files.

Long-Term Security Practices

Regularly update software and libraries.
Implement file type and content validation mechanisms.

Patching and Updates

Apply patches provided by the software vendor.