Scientific Linux Security Update : rdma on SL6.x i386/x86_64

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

A denial of service flaw was found in the way ibacm managed reference
counts for multicast connections. An attacker could send
specially-crafted multicast packets that would cause the ibacm daemon
to crash. (CVE-2012-4517)

It was found that the ibacm daemon created some files with
world-writable permissions. A local attacker could use this flaw to
overwrite the contents of the ibacm.log or ibacm.port file, allowing
them to mask certain actions from the log or cause ibacm to run on a
non-default port. (CVE-2012-4518)

The InfiniBand/iWARP/RDMA stack components have been upgraded to more
recent upstream versions.

This update also fixes the following bugs :

- Previously, the 'ibnodes -h' command did not show a
proper usage message. With this update the problem is
fixed and 'ibnodes -h' now shows the correct usage
message.

- Previously, the ibv_devinfo utility erroneously showed
iWARP cxgb3 hardware's physical state as invalid even
when the device was working. For iWARP hardware, the
phys_state field has no meaning. This update patches the
utility to not print out anything for this field when
the hardware is iWARP hardware.

- Prior to the release of Scientific Linux 6.3, the kernel
created the InfiniBand device files in the wrong place
and a udev rules file was used to force the devices to
be created in the proper place. With the update to 6.3,
the kernel was fixed to create the InfiniBand device
files in the proper place, and so the udev rules file
was removed as no longer being necessary. However, a bug
in the kernel device creation meant that, although the
devices were now being created in the right place, they
had incorrect permissions. Consequently, when users
attempted to run an RDMA application as a non-root user,
the application failed to get the necessary permissions
to use the RDMA device and the application terminated.
This update puts a new udev rules file in place. It no
longer attempts to create the InfiniBand devices since
they already exist, but it does correct the device
permissions on the files.

- Previously, using the 'perfquery -C' command with a host
name caused the perfquery utility to become
unresponsive. The list of controllers to process was
never cleared and the process looped infinitely on a
single controller. A patch has been applied to make sure
that in the case where the user passes in the -C option,
the controller list is cleared out once that controller
has been processed. As a result, perfquery now works as
expected in the scenario described.

- The OpenSM init script did not handle the case where
there were no configuration files under
'/etc/rdma/opensm.conf.*'. With this update, the script
as been patched and the InfiniBand Subnet Manager,
OpenSM, now starts as expected in the scenario
described.

This update also adds the following enhancement :

- This update provides an updated mlx4_ib Mellanox driver
which includes Single Root I/O Virtualization (SR-IOV)
support.

See also :

http://www.nessus.org/u?54571705

Solution :

Update the affected packages.

Risk factor :

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

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 65014 ()

Bugtraq ID:

CVE ID: CVE-2012-4517
CVE-2012-4518