Heap-based buffer over-read in fontforge
Summary
DLA-1065-1: fontforge - security update. Affects fontforge versions < 0.0.20120101+git-2+deb7u1. Fixed in 0.0.20120101+git-2+deb7u1. How to fix ↓
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Background
FontForge is an open-source font editor that allows users to create and modify fonts. It supports various font formats and provides a range of editing tools. However, FontForge is vulnerable to a heap-based buffer over-read in several functions. This vulnerability can be exploited by an attacker through a crafted OpenType Font (OTF) file, leading to denial of service or potential code execution.
Vulnerability Detail
The vulnerability in FontForge arises from a heap-based buffer over-read in multiple functions. When processing a specially crafted OTF file, FontForge fails to properly handle certain data, resulting in the over-read. This can be exploited by an attacker to crash the application or potentially execute arbitrary code. The impact of this vulnerability depends on the context in which FontForge is used, but it could lead to unauthorized access, data loss, or further compromise of the system.
How To Fix
Minimum fixed version
0.0.20120101+git-2+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade fontforgeTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the security update provided by the Debian project to mitigate the risk.
Conclusion
FontForge is susceptible to a heap-based buffer over-read vulnerability that can be exploited through a specially crafted OTF file. To mitigate the risk, users should upgrade their fontforge package to the latest version provided by the Debian project. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for fontforge →
FAQ
FontForge is an open-source font editor used for creating and modifying fonts.
A heap-based buffer over-read occurs when a program reads data from a buffer beyond its allocated size in the heap memory. This can lead to information disclosure, crashes, or potential code execution.
An attacker can exploit this vulnerability by crafting a malicious OTF file and tricking a user into opening it with FontForge. This can be done through various attack vectors, such as email attachments or compromised websites.
The impact of this vulnerability can vary depending on the context in which FontForge is used. It could lead to denial of service, unauthorized access, data loss, or further compromise of the system.
Yes, the Debian project has released a security update that addresses this vulnerability. Users are advised to upgrade their fontforge package to the patched version.
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