CVE-2017-7858 : Security Advisory and Response

FreeType 2 before 2017-03-07 has a vulnerability that allows for an unauthorized write to occur. This vulnerability is related to the TT_Get_MM_Var function in truetype/ttgxvar.c and the sfnt_init_face function in sfnt/sfobjs.c.

Understanding CVE-2017-7858

This CVE entry pertains to a specific vulnerability in FreeType 2 that could lead to unauthorized write operations.

What is CVE-2017-7858?

CVE-2017-7858 is a security vulnerability in FreeType 2 that existed before 2017-03-07, enabling unauthorized write access.

The Impact of CVE-2017-7858

The vulnerability allows attackers to perform unauthorized write operations, potentially leading to security breaches and data manipulation.

Technical Details of CVE-2017-7858

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability is specifically related to the TT_Get_MM_Var function in truetype/ttgxvar.c and the sfnt_init_face function in sfnt/sfobjs.c.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions before 2017-03-07

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to execute unauthorized write operations, potentially compromising system integrity.

Mitigation and Prevention

Protective measures to address and prevent the CVE-2017-7858 vulnerability.

Immediate Steps to Take

Update FreeType 2 to a version released after 2017-03-07.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement access controls and restrictions to limit unauthorized activities.

Patching and Updates

Apply patches provided by FreeType to address the vulnerability.