GNU Libextractor through 1.8 has an out-of-bounds read vulnerability in the function history_extract() in plugins/ole2_extractor.c, related to EXTRACTOR_common_convert_to_utf8 in common/convert.c.
https://www.debian.org/security/2018/dsa-4361
https://lists.debian.org/debian-lts-announce/2018/12/msg00015.html
https://gnunet.org/git/libextractor.git/tree/ChangeLog
https://gnunet.org/git/libextractor.git/commit/?id=b405d707b36e0654900cba78e89f49779efea110