Open Babel has out-of-bounds read in PQS lowerit (pre-buffer read)

SummaryA memory-safety vulnerability in Open Babel's PQS parser caused anout-of-bounds pre-buffer read when reading a crafted input file. DetailsThe flaw was in the lowerit helper used by the PQS parser. Amalformed input caused the helper to read one or more bytes beforethe start of its input...