[El-errata] New updates available via Ksplice (ELSA-2016-1633)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2016-1633 can now be patched using Ksplice
CVEs: CVE-2016-5696

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2016-1633.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on EL 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-2016-5696: Session hijacking in TCP connections.

A logic error in the core TCP subsystem can allow attackers to easily
guess secret information and inject arbitrary packets into a TCP stream.


* Improved fix for CVE-2016-5696: Session hijacking in TCP connections.

The original fix for CVE-2016-5696 limited challenge ACKs globally
rather than per TCP connection which may not fully mitigate the ability
for a remote attacker to hijack a TCP connection.

SUPPORT

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