FontForge Heap-Based Buffer Overflow Vulnerability in SGI File Parsing Allowing Remote Code Execution

A heap-based buffer overflow vulnerability has been identified in FontForge within the GUtils component, specifically related to the parsing of scanlines in SGI files. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. The issue arises from inadequate validation of user-supplied data lengths before copying them to a heap-based buffer. Exploitation of this vulnerability requires user interaction, as the target must open a malicious SGI file.

Impact

Exploitation of this vulnerability allows for arbitrary code execution on the affected system, with the executed code running in the context of the current process.

Remediation

Due to the nature of this vulnerability, the recommended mitigation strategy is to limit interactions with the affected product.