389-ds-base-1.2.11.15-94.AXS4

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es):

* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)

* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2017-15135 issue was discovered by Martin Poole (Asianux).

CVE-2017-15135
It was found that 389-ds-base since 1.3.6.1 up to and including
1.4.0.3 did not always handle internal hash comparison operations
correctly during the authentication process. A remote, unauthenticated
attacker could potentially use this flaw to bypass the authentication
process under very rare and specific circumstances.
CVE-2018-1054
An out-of-bounds memory read flaw was found in the way 389-ds-base
handled certain LDAP search filters, affecting all versions including
1.4.x. A remote, unauthenticated attacker could potentially use this
flaw to make ns-slapd crash via a specially crafted LDAP request, thus
resulting in denial of service.