Scientific Linux Security Update : openldap on SL7.x x86_64

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher
strings. As a result, OpenLDAP could potentially use ciphers that were
not intended to be enabled. (CVE-2015-3276)

The openldap packages have been upgraded to upstream version 2.4.40,
which provides a number of bug fixes and one enhancement over the
previous version :

- The ORDERING matching rules have been added to the
ppolicy attribute type descriptions. * The server no
longer terminates unexpectedly when processing SRV
records. * Missing objectClass information has been
added, which enables the user to modify the front-end
configuration by standard means.

This update also fixes the following bugs :

- Previously, OpenLDAP did not properly handle a number of
simultaneous updates. As a consequence, sending a number
of parallel update requests to the server could cause a
deadlock. With this update, a superfluous locking
mechanism causing the deadlock has been removed, thus
fixing the bug.

- The httpd service sometimes terminated unexpectedly with
a segmentation fault on the libldap library unload. The
underlying source code has been modified to prevent a
bad memory access error that caused the bug to occur. As
a result, httpd no longer crashes in this situation.

- After upgrading the system from Scientific Linux 6 to
Scientific Linux 7, symbolic links to certain libraries
unexpectedly pointed to locations belonging to the
openldap-devel package. If the user uninstalled
openldap- devel, the symbolic links were broken and the
'rpm -V openldap' command sometimes produced errors.
With this update, the symbolic links no longer get
broken in the described situation. If the user
downgrades openldap to version 2.4.39-6 or earlier, the
symbolic links might break. After such downgrade, it is
recommended to verify that the symbolic links did not
break. To do this, make sure the yum-plugin-verify
package is installed and obtain the target libraries by
running the 'rpm -V openldap' or 'yum verify openldap'
command.

In addition, this update adds the following enhancement :

- OpenLDAP clients now automatically choose the Network
Security Services (NSS) default cipher suites for
communication with the server. It is no longer necessary
to maintain the default cipher suites manually in the
OpenLDAP source code.

See also :

http://www.nessus.org/u?1c9baeb9

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 87566 ()

Bugtraq ID:

CVE ID: CVE-2015-3276

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