CVE-2019-9543 : Security Advisory and Response
Discover the impact of CVE-2019-9543 found in Poppler version 0.74.0. Learn about the Denial of Service risk and exploitation mechanism. Find mitigation steps and long-term security practices here.
A vulnerability was found in version 0.74.0 of Poppler that can lead to a Denial of Service (Segmentation fault) or potentially have other unspecified consequences.
Understanding CVE-2019-9543
This CVE involves a recursive function call vulnerability in Poppler version 0.74.0 triggered by a specially-crafted PDF file.
What is CVE-2019-9543?
The vulnerability in Poppler version 0.74.0 allows an attacker to exploit a recursive function call in JBIG2Stream::readGenericBitmap(), potentially resulting in a Denial of Service or other impacts.
The Impact of CVE-2019-9543
The exploit can lead to a Denial of Service (Segmentation fault) or have other unspecified consequences, posing a risk to the stability and security of affected systems.
Technical Details of CVE-2019-9543
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Poppler version 0.74.0 is related to a recursive function call in JBIG2Stream::readGenericBitmap(), triggered by a crafted PDF file.
Affected Systems and Versions
- Affected Version: 0.74.0 of Poppler
- Systems using the pdfseparate binary
Exploitation Mechanism
By sending a specially-crafted PDF file to the pdfseparate binary, an attacker can trigger the recursive function call in JBIG2Stream::readGenericBitmap() in Poppler version 0.74.0.
Mitigation and Prevention
Protecting systems from CVE-2019-9543 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly
- Consider restricting access to vulnerable components
- Monitor for any unusual PDF file activities
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities
- Conduct security assessments and audits periodically
- Educate users on safe PDF file handling practices
Patching and Updates
- Stay informed about security updates from Poppler
- Apply patches and updates as soon as they are released to mitigate the vulnerability