[Ksplice][EL7-Updates] New Ksplice updates for OL 7, RHEL 7, CentOS 7, and Scientific Linux 7 (RHSA-2017:1615-2)

[Oracle Ksplice]

Synopsis: RHSA-2017:1615-2 can now be patched using Ksplice
CVEs: CVE-2017-2583 CVE-2017-6214 CVE-2017-7477 CVE-2017-7645 CVE-2017-7895

Systems running RHCK on Oracle Linux 7, Red Hat Enterprise Linux 7,
CentOS 7, and Scientific Linux 7 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2017:1615-2.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running OL 7, RHEL 7,
CentOS 7, and Scientific Linux 7 install these updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* CVE-2017-7477: Remote Denial-of-service in 802.1AE implementation.

A flaw in the handling of memory allocation in the macsec driver can
result in a buffer overflow.  A remote attacker could use this flaw to
cause a denial-of-service.


* CVE-2017-2583: Denial-of-service due to incorrect segments configuration within VMs.

A logic error leads to an incorrect configuration of segment selector
within a Virtual Machine. An attacker could use this incorrect
configuration to cause a denial-of-service of the VM.


* CVE-2017-6214: Denial-of-service when splicing from TCP socket.

A specially crafted packet can be queued to trigger an infinite loop in
IPv4 subsystem. This can be exploited by an remote attacker to cause
denial-of-service.


* CVE-2017-7645: Remote denial-of-service via overly sized NFS2/3 RPC call.

If an NFS version 2 or 3 client appends extraneous data to their RPC
calls or replies, the server fails to correctly allocate sufficient
memory, potentially causing memory corruption and a denial-of-service.


* CVE-2017-7895: Remote information leak in kernel NFS server.

Missing bounds checks could result in an out-of-bounds memory access,
allowing a remote attacker to leak the contents of kernel memory.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.