CVE-2020-25690

Name of the Vulnerable Software and Affected Versions: FontForge versions prior to 20200314

Description: An out-of-bounds write flaw was found in FontForge while parsing SFD files containing certain LayerCount tokens. This flaw allows an attacker to manipulate the memory allocated on the heap, causing the application to crash or execute arbitrary code. The highest threat from this issue is to confidentiality, integrity, as well as system availability.

Recommendations: For versions prior to 20200314, update to a version 20200314 or later to resolve the issue. As a temporary workaround, consider restricting the parsing of SFD files or disabling the functionality that handles LayerCount tokens until a patch is available.