[Ksplice][EL6-Updates] New Ksplice updates for OL 6, RHEL 6, CentOS 6, and Scientific Linux 6 (RHSA-2017:3200-01)

[Gregory Herrero]

Synopsis: RHSA-2017:3200-01 can now be patched using Ksplice
CVEs: CVE-2017-1000111 CVE-2017-1000112 CVE-2017-14106

Systems running RHCK on Oracle Linux 6, Red Hat Enterprise Linux 6,
CentOS 6, and Scientific Linux 6 can now use Ksplice to patch against
the latest Red Hat Security Advisory, RHSA-2017:3200-01.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running OL 6, RHEL 6,
CentOS 6, and Scientific Linux 6 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-2017-1000111: Privilege escalation when setting options on AF_PACKET socket.

A missing locking when setting options on AF_PACKET socket could lead to
an out-of-bounds access. A local attacker with CAP_NET_RAW capability,
or on a system with unprivileged namespace enabled, could use this flaw
to cause a denial-of-service or execute arbitrary code.


* CVE-2017-1000112: Privilege escalation using the UDP Fragmentation Offload (UFO) code.

Multiple missing checks on headers length when using UDP Fragmentation
Offload (UFO) protocol while sending packets could lead to out-of-bounds
accesses.  A local attacker with CAP_NET_RAW capability, or on a system
with unprivileged namespace enabled, could use this flaw to cause a
denial-of-service or execute arbitrary code.


* CVE-2017-14106: Divide-by-zero on TCP disconnect.

A missing initialization of the TCP Maximum Segment Size (MSS) to the
minimum authorized MSS value could lead to a division by zero on TCP
disconnect.  A local user could use this flaw to cause a denial-of-service.

SUPPORT

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