In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.
{
"severity": "High",
"cpes": [
"cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*",
"cpe:2.3:a:openldap:openldap:2.5.0:alpha:*:*:*:*:*:*",
"cpe:2.3:a:openldap:openldap:2.5.1:alpha:*:*:*:*:*:*"
]
}