Test ID:	1.3.6.1.4.1.25623.1.0.881747
Category:	CentOS Local Security Checks
Title:	CentOS Update for kernel CESA-2013:0911 centos6
Summary:	The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
Description:	Summary: The remote host is missing an update for the 'kernel' package(s) announced via the referenced advisory. Vulnerability Insight: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * A flaw was found in the way KVM (Kernel-based Virtual Machine) initialized a guest's registered pv_eoi (paravirtualized end-of-interrupt) indication flag when entering the guest. An unprivileged guest user could potentially use this flaw to crash the host. (CVE-2013-1935, Important) * A missing sanity check was found in the kvm_set_memory_region() function in KVM, allowing a user-space process to register memory regions pointing to the kernel address space. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-1943, Important) * A double free flaw was found in the Linux kernel's Virtual Ethernet Tunnel driver (veth). A remote attacker could possibly use this flaw to crash a target system. (CVE-2013-2017, Moderate) Red Hat would like to thank IBM for reporting the CVE-2013-1935 issue and Atzm WATANABE of Stratosphere Inc. for reporting the CVE-2013-2017 issue. The CVE-2013-1943 issue was discovered by Michael S. Tsirkin of Red Hat. This update also fixes several bugs and adds one enhancement. Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section. Users should upgrade to these updated packages, which contain backported patches to correct these issues and add this enhancement. The system must be rebooted for this update to take effect. Affected Software/OS: kernel on CentOS 6 Solution: Please install the updated packages. CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2013-1935 RHSA-2013:0907 https://rhn.redhat.com/errata/RHSA-2013-0907.html RHSA-2013:0911 http://rhn.redhat.com/errata/RHSA-2013-0911.html https://bugzilla.redhat.com/show_bug.cgi?id=949981 Common Vulnerability Exposure (CVE) ID: CVE-2013-1943 USN-1939-1 http://www.ubuntu.com/usn/USN-1939-1 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 https://bugzilla.redhat.com/show_bug.cgi?id=950490 https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e Common Vulnerability Exposure (CVE) ID: CVE-2013-2017 [oss-security] 20130429 Re: CVE request -- Linux kernel: veth: double-free in case of congestion http://www.openwall.com/lists/oss-security/2013/04/29/10 http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6ec82562ffc6f297d0de36d65776cff8e5704867 https://bugzilla.redhat.com/show_bug.cgi?id=957705 https://github.com/torvalds/linux/commit/6ec82562ffc6f297d0de36d65776cff8e5704867 https://support.f5.com/csp/article/K39655464
Copyright	Copyright (C) 2013 Greenbone AG

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