A flaw was found in the way that the Red Hat Directory Server handled simple paged result searches. If an unauthenticated user were able to send multiple simple paged search requests to Directory Server, it could cause the server to crash.

It was discovered that 398 / Red Hat Directory Server set LDLIBRARYPATH environment variable to insecure value containing empty path elements in various shell scripts used by DS (e.g. various backup/restore scripts instantiated for each DS instance, as well as the main initialization script). Such LDLIBRARYPATH setting causes ld.so dynamic linker to perform library search relative to the current working directory before searching system library directories. A local attacker able to trick a user running those scripts (usually the root user) to run them while working from an attacker writeable directory could use this flaw to escalate their privileges via specially crated dynamic library.

It was discovered that 389 / Red Hat Directory Server's setup scripts set insecure permissions (0777) on the /var/run/dirsrv directory used to store Directory Server's pid files when multiple Directory Server instances were configured on the system to be run under the different unprivileged users.

A local user could use this flaw to create, remove or replace pid files in this directory, possibly preventing correct start of the Directory Server instances, or causing Directory Server init script to kill arbitrary process during the Directory Server shutdown.

A flaw was found in how Red Hat Directory Server and the 389 Directory Server would handle access controls to certain attributes of an entry. A user with access to the Directory Server could use a series of searches to guess the values of other attributes that they should not be able to see. If a user had access (authenticated or anonymous, depending on whether or not the Directory Server allows anonymous access), they could use this to obtain information that should be restricted due to access controls.

389 Directory Server 1.2.11.15 (aka Red Hat Directory Server before 8.2.11-14) allows remote authenticated users to cause a denial of service (crash) via multiple @ characters in a GER attribute list in a search request.