CVE-2018-6876 Explained : Impact and Mitigation

A vulnerability exists in the OLEProperty class of the ole/oleprop.cpp file in libfpx 1.3.1-10, which is utilized in ImageMagick 7.0.7-22 Q16 and other related applications. This vulnerability can be exploited remotely by malicious individuals to trigger a denial of service condition through a specifically crafted bmp image, resulting in a stack-based buffer under-read.

Understanding CVE-2018-6876

This CVE identifies a vulnerability in the OLEProperty class of libfpx, affecting ImageMagick and other products.

What is CVE-2018-6876?

The OLEProperty class in libfpx 1.3.1-10, as used in ImageMagick 7.0.7-22 Q16 and other products, allows remote attackers to cause a denial of service (stack-based buffer under-read) via a crafted bmp image.

The Impact of CVE-2018-6876

The vulnerability can be exploited remotely by attackers to trigger a denial of service condition, potentially leading to service disruption and system instability.

Technical Details of CVE-2018-6876

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in the OLEProperty class of libfpx can result in a stack-based buffer under-read when processing a specially crafted bmp image.

Affected Systems and Versions

Affected software versions include libfpx 1.3.1-10 and ImageMagick 7.0.7-22 Q16.

Exploitation Mechanism

Malicious individuals can exploit this vulnerability remotely by sending a specifically crafted bmp image to trigger the stack-based buffer under-read.

Mitigation and Prevention

Protecting systems from CVE-2018-6876 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates to mitigate the vulnerability.
Implement network security measures to prevent unauthorized access to vulnerable systems.

Long-Term Security Practices

Regularly update software and applications to ensure the latest security patches are in place.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates from software vendors to apply patches promptly.