CVE-2019-9143 : Security Advisory and Response

Exiv2 version 0.27 has a flaw that allows for infinite recursion in the file image.cpp, specifically at Exiv2::Image::printTiffStructure. This vulnerability can be exploited by using a manipulated file, potentially leading to a Denial of Service (Segmentation fault) or other adverse effects.

Understanding CVE-2019-9143

This CVE involves a flaw in Exiv2 version 0.27 that can result in a Denial of Service attack or other unspecified impacts when triggered by a crafted file.

What is CVE-2019-9143?

CVE-2019-9143 is a vulnerability in Exiv2 version 0.27 that allows for infinite recursion in the file image.cpp, specifically at Exiv2::Image::printTiffStructure. This flaw can be exploited using a manipulated file.

The Impact of CVE-2019-9143

The vulnerability in Exiv2 version 0.27 can lead to a Denial of Service (Segmentation fault) or potentially result in other unmentioned effects when exploited.

Technical Details of CVE-2019-9143

Exiv2 version 0.27 vulnerability details:

Vulnerability Description

Flaw in Exiv2 version 0.27 allows for infinite recursion at Exiv2::Image::printTiffStructure in the file image.cpp.

Affected Systems and Versions

Affected version: 0.27
Product: Exiv2
Vendor: N/A

Exploitation Mechanism

The vulnerability can be exploited by using a manipulated file to trigger the infinite recursion in Exiv2::Image::printTiffStructure.

Mitigation and Prevention

Steps to address CVE-2019-9143:

Immediate Steps to Take

Update Exiv2 to a patched version if available.
Avoid opening untrusted or manipulated image files.

Long-Term Security Practices

Regularly update software and libraries to patched versions.
Implement file input validation to prevent exploitation through manipulated files.

Patching and Updates

Check for security updates from Exiv2 and apply patches promptly to mitigate the vulnerability.