CVE-2019-9200 : What You Need to Know
Learn about CVE-2019-9200, a vulnerability in Poppler 0.74.0 that allows attackers to trigger a heap-based buffer underwrite by sending a malicious PDF file, potentially leading to a Denial of Service or other effects. Find mitigation steps and prevention measures here.
Poppler 0.74.0's ImageStream::getLine() function in Stream.cc is vulnerable to a heap-based buffer underwrite, allowing attackers to exploit it by sending a malicious PDF file to the pdfimages binary, potentially leading to a Denial of Service or other effects.
Understanding CVE-2019-9200
This CVE involves a vulnerability in Poppler 0.74.0 that can be exploited through a specially crafted PDF file.
What is CVE-2019-9200?
The vulnerability in ImageStream::getLine() in Poppler 0.74.0 allows for a heap-based buffer underwrite, which can result in a Denial of Service (Segmentation fault) or other unspecified impacts when a malicious PDF file is processed.
The Impact of CVE-2019-9200
Exploiting this vulnerability can lead to a Denial of Service condition or potentially enable attackers to achieve other effects by causing a Segmentation fault.
Technical Details of CVE-2019-9200
Poppler 0.74.0's vulnerability in the ImageStream::getLine() function is detailed below:
Vulnerability Description
The vulnerability involves a heap-based buffer underwrite in ImageStream::getLine() in Poppler 0.74.0, triggered by processing a crafted PDF file with the pdfimages binary.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: 0.74.0
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a specially crafted PDF file to the pdfimages binary, triggering the heap-based buffer underwrite.
Mitigation and Prevention
To address CVE-2019-9200, consider the following steps:
Immediate Steps to Take
- Apply security patches provided by the vendor
- Avoid opening PDF files from untrusted or unknown sources
- Monitor vendor advisories for updates and apply them promptly
Long-Term Security Practices
- Regularly update software and applications to the latest versions
- Implement network segmentation to limit the impact of potential attacks
Patching and Updates
Ensure that you regularly check for security updates and patches from the vendor to mitigate the risk associated with CVE-2019-9200.