The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2013:1449 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    * A flaw was found in the way the Linux kernel handled the creation of     temporary IPv6 addresses. If the IPv6 privacy extension was enabled     (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to '2'), an attacker on     the local network could disable IPv6 temporary address generation, leading     to a potential information disclosure. (CVE-2013-0343, Moderate)

    * An information leak flaw was found in the way Linux kernel's device     mapper subsystem, under certain conditions, interpreted data written to     snapshot block devices. An attacker could use this flaw to read data from     disk blocks in free space, which are normally inaccessible. (CVE-2013-4299,     Moderate)

    * An off-by-one flaw was found in the way the ANSI CPRNG implementation in     the Linux kernel processed non-block size aligned requests. This could lead     to random numbers being generated with less bits of entropy than expected     when ANSI CPRNG was used. (CVE-2013-4345, Moderate)

    * An information leak flaw was found in the way Xen hypervisor emulated the     OUTS instruction for 64-bit paravirtualized guests. A privileged guest user     could use this flaw to leak hypervisor stack memory to the guest.
    (CVE-2013-4368, Moderate)

    Red Hat would like to thank Fujitsu for reporting CVE-2013-4299, Stephan     Mueller for reporting CVE-2013-4345, and the Xen project for reporting     CVE-2013-4368.

    This update also fixes the following bug:

    * A bug in the GFS2 code prevented glock work queues from freeing     glock-related memory while the glock memory shrinker repeatedly queued a     large number of demote requests, for example when performing a simultaneous     backup of several live GFS2 volumes with a large file count. As a     consequence, the glock work queues became overloaded which resulted in a     high CPU usage and the GFS2 file systems being unresponsive for a     significant amount of time. A patch has been applied to alleviate this     problem by calling the yield() function after scheduling a certain amount     of tasks on the glock work queues. The problem can now occur only with     extremely high work loads. (BZ#1014714)

    All kernel users are advised to upgrade to these updated packages, which     contain backported patches to correct these issues. The system must be     rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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RHEL 5 : kernel (RHSA-2013:1449)

high Nessus Plugin ID 70553

Version 1.15