The zipreadeocd64 function in zipopen.c in libzip before 1.3.0 mishandles EOCD records, which allows remote attackers to cause a denial of service (memory allocation failure in zipcdirgrow in zipdirent.c) via a crafted ZIP archive.

Double free vulnerability in the zipdirentread function in zipdirent.c in libzip allows attackers to have unspecified impact via unknown vectors.

A use-after-free in the zipdirentread function of zipdirent.c in libzip 1.2.0 allows attackers to have an unspecified impact by attempting to unzip a malformed ZIP archive. NOTE: the discoverer states "This use-after-free is triggered prior to the double free reported in CVE-2017-12858."