CVE-2018-20098 : Security Advisory and Response

This CVE-2018-20098 article provides insights into a heap-based buffer over-read vulnerability found in Exiv2 version 0.27-RC3, impacting the function Exiv2::Jp2Image::encodeJp2Header in the jp2image.cpp file.

Understanding CVE-2018-20098

In December 2018, a remote denial of service attack exploit was discovered in Exiv2 version 0.27-RC3 due to a heap-based buffer over-read vulnerability.

What is CVE-2018-20098?

The vulnerability in Exiv2 allows an attacker to trigger a remote denial of service attack by providing a specially crafted input.

The Impact of CVE-2018-20098

The impact of this vulnerability is the potential for a remote denial of service attack, which can disrupt the normal operation of the affected system.

Technical Details of CVE-2018-20098

Examine the technical aspects of this CVE to understand its implications.

Vulnerability Description

The vulnerability lies in the function Exiv2::Jp2Image::encodeJp2Header in the jp2image.cpp file, leading to a heap-based buffer over-read.

Affected Systems and Versions

Affected Systems: Not specified
Affected Versions: Exiv2 version 0.27-RC3

Exploitation Mechanism

An attacker can exploit this vulnerability by providing a specially crafted input to trigger the heap-based buffer over-read.

Mitigation and Prevention

Take necessary steps to mitigate the risks associated with CVE-2018-20098.

Immediate Steps to Take

Update Exiv2 to a patched version that addresses the heap-based buffer over-read vulnerability.
Implement network security measures to prevent unauthorized access to vulnerable systems.

Long-Term Security Practices

Regularly monitor security advisories and apply patches promptly.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security updates released by Exiv2 and apply patches as soon as they are available.