REDHAT-BUG-2426421: Buffer Overflow
FontForge GUtils BMP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of pixels within BMP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27517.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2426421?
The severity of REDHAT-BUG-2426421 is high due to its potential for remote code execution.
How does REDHAT-BUG-2426421 enable exploitation?
REDHAT-BUG-2426421 allows exploitation through a heap-based buffer overflow that requires user interaction with a malicious BMP file.
What software is affected by REDHAT-BUG-2426421?
REDHAT-BUG-2426421 affects installations of FontForge.
How do I fix REDHAT-BUG-2426421?
To fix REDHAT-BUG-2426421, update to the latest version of FontForge that addresses this vulnerability.
What type of attack is associated with REDHAT-BUG-2426421?
REDHAT-BUG-2426421 is associated with a remote code execution attack that can occur when opening a crafted BMP file.