ClamAV 0.100.3

ClamAV 0.100.3 is a patch release to address a few security related bugs.

This patch release is being released alongside the 0.101.2 patch so that users who are unable to upgrade to 0.101 due to libclamav API changes are protected.

The bug fixes in this release are limited to security-related bugs only. Users are encouraged to upgrade to 0.101.2 for additional improvements.

• Fixes for the following vulnerabilities:
• CVE-2019-1787: An out-of-bounds heap read condition may occur when scanning PDF documents. The defect is a failure to correctly keep track of the number of bytes remaining in a buffer when indexing file data.
• CVE-2019-1789: An out-of-bounds heap read condition may occur when scanning PE files (i.e. Windows EXE and DLL files) that have been packed using Aspack as a result of inadequate bound-checking.
• CVE-2019-1788: An out-of-bounds heap write condition may occur when scanning OLE2 files such as Microsoft Office 97-2003 documents. The invalid write happens when an invalid pointer is mistakenly used to initialize a 32bit integer to zero. This is likely to crash the application.

Thank you to the Google OSS-Fuzz project for identifying and reporting the bugs patched in this release.