The libldb packages provide an extensible library that implements an LDAP-like API to access remote LDAP servers, or use local TDB databases. A denial of service flaw was found in the ldb_wildcard_compare function of libldb. A remote attacker could send a specially crafted packet that, when processed by an application using libldb , would cause that application to consume an excessive amount of memory and crash. A memory-read flaw was found in the way the libldb library processed LDB DN records with a null byte. An authenticated, remote attacker could use this flaw to read heap-memory pages from the server. Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Thilo Uttendorfer as the original reporter of CVE-2015-3223, and Douglas Bagnall as the original reporter of CVE-2015-5330. All libldb users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.