An issue was discovered in GNU LibreDWG 0.92. There is a heap-based buffer over-read in decode_R13_R2000 in decode.c.
https://github.com/LibreDWG/libredwg/issues/176#issuecomment-568643439
https://github.com/LibreDWG/libredwg/issues/176
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00033.html