CVE-2017-11575 : What You Need to Know

FontForge version 20161012 contains a security issue where a buffer over-read vulnerability exists in the strnmatch function found in char.c. Exploitation of this vulnerability can lead to denial of service (DoS) or remote code execution by utilizing a specifically crafted OpenType Font (OTF) file. This vulnerability is related to a function call made from the readttfcopyrights function in parsettf.c.

Understanding CVE-2017-11575

FontForge 20161012 is vulnerable to a buffer over-read in strnmatch (char.c) resulting in DoS or code execution via a crafted OTF file, related to a call from the readttfcopyrights function in parsettf.c.

What is CVE-2017-11575?

CVE-2017-11575 is a vulnerability in FontForge version 20161012 that allows for a buffer over-read in the strnmatch function, potentially leading to denial of service or remote code execution through a specially crafted OTF file.

The Impact of CVE-2017-11575

The vulnerability can result in denial of service (DoS) attacks or remote code execution on systems running the affected FontForge version.

Technical Details of CVE-2017-11575

FontForge version 20161012 is susceptible to a buffer over-read vulnerability in the strnmatch function, which can be exploited for malicious purposes.

Vulnerability Description

The security issue in FontForge version 20161012 allows for a buffer over-read in the strnmatch function, potentially leading to DoS or remote code execution.

Affected Systems and Versions

Affected Version: FontForge 20161012

Exploitation Mechanism

Attackers can exploit this vulnerability by using a specifically crafted OpenType Font (OTF) file to trigger the buffer over-read in the strnmatch function.

Mitigation and Prevention

FontForge users should take immediate steps to address and prevent exploitation of CVE-2017-11575.

Immediate Steps to Take

Update FontForge to a patched version that addresses the buffer over-read vulnerability.
Avoid opening untrusted or suspicious OTF files to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

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