CVE-2021-39247

Name of the Vulnerable Software and Affected Versions Zint Barcode Generator versions prior to 2.10.0

Description The issue is related to a one-byte buffer over-read in the Zint Barcode Generator. This is connected to the is last single ascii function in code1.c and the rs encode uint function in reedsol.c.

Recommendations For versions prior to 2.10.0, update to version 2.10.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the functions is last single ascii and rs encode uint until a patch is available.