ID de Prueba:	1.3.6.1.4.1.25623.1.0.881925
Categoría:	CentOS Local Security Checks
Título:	CentOS Update for qemu-guest-agent CESA-2014:0420 centos6
Resumen:	The remote host is missing an update for the 'qemu-guest-agent'; package(s) announced via the referenced advisory.
Descripción:	Summary: The remote host is missing an update for the 'qemu-guest-agent' package(s) announced via the referenced advisory. Vulnerability Insight: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM. Multiple integer overflow, input validation, logic error, and buffer overflow flaws were discovered in various QEMU block drivers. An attacker able to modify a disk image file loaded by a guest could use these flaws to crash the guest, or corrupt QEMU process memory on the host, potentially resulting in arbitrary code execution on the host with the privileges of the QEMU process. (CVE-2014-0143, CVE-2014-0144, CVE-2014-0145, CVE-2014-0147) A buffer overflow flaw was found in the way the virtio_net_handle_mac() function of QEMU processed guest requests to update the table of MAC addresses. A privileged guest user could use this flaw to corrupt QEMU process memory on the host, potentially resulting in arbitrary code execution on the host with the privileges of the QEMU process. (CVE-2014-0150) A divide-by-zero flaw was found in the seek_to_sector() function of the parallels block driver in QEMU. An attacker able to modify a disk image file loaded by a guest could use this flaw to crash the guest. (CVE-2014-0142) A NULL pointer dereference flaw was found in the QCOW2 block driver in QEMU. An attacker able to modify a disk image file loaded by a guest could use this flaw to crash the guest. (CVE-2014-0146) It was found that the block driver for Hyper-V VHDX images did not correctly calculate BAT (Block Allocation Table) entries due to a missing bounds check. An attacker able to modify a disk image file loaded by a guest could use this flaw to crash the guest. (CVE-2014-0148) The CVE-2014-0143 issues were discovered by Kevin Wolf and Stefan Hajnoczi of Red Hat, the CVE-2014-0144 issues were discovered by Fam Zheng, Jeff Cody, Kevin Wolf, and Stefan Hajnoczi of Red Hat, the CVE-2014-0145 issues were discovered by Stefan Hajnoczi of Red Hat, the CVE-2014-0150 issue was discovered by Michael S. Tsirkin of Red Hat, the CVE-2014-0142, CVE-2014-0146, and CVE-2014-0147 issues were discovered by Kevin Wolf of Red Hat, and the CVE-2014-0148 issue was discovered by Jeff Cody of Red Hat. All qemu-kvm users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. Affected Software/OS: qemu-guest-agent on CentOS 6 Solution: Please install the updated packages. CVSS Score: 4.9 CVSS Vector: AV:A/AC:M/Au:S/C:P/I:P/A:P
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2014-0142 Debian Security Information: DSA-3044 (Google Search) http://www.debian.org/security/2014/dsa-3044 RedHat Security Advisories: RHSA-2014:0420 http://rhn.redhat.com/errata/RHSA-2014-0420.html RedHat Security Advisories: RHSA-2014:0421 http://rhn.redhat.com/errata/RHSA-2014-0421.html Common Vulnerability Exposure (CVE) ID: CVE-2014-0143 Common Vulnerability Exposure (CVE) ID: CVE-2014-0144 http://git.qemu.org/?p=qemu.git;a=commit;h=24342f2cae47d03911e346fe1e520b00dc2818e0 http://git.qemu.org/?p=qemu.git;a=commit;h=2d51c32c4b511db8bb9e58208f1e2c25e4c06c85 http://git.qemu.org/?p=qemu.git;a=commit;h=5dab2faddc8eaa1fb1abdbe2f502001fc13a1b21 http://git.qemu.org/?p=qemu.git;a=commit;h=63fa06dc978f3669dbfd9443b33cde9e2a7f4b41 http://git.qemu.org/?p=qemu.git;a=commit;h=6d4b9e55fc625514a38d27cff4b9933f617fa7dc http://git.qemu.org/?p=qemu.git;a=commit;h=7b103b36d6ef3b11827c203d3a793bf7da50ecd6 http://git.qemu.org/?p=qemu.git;a=commit;h=97f1c45c6f456572e5b504b8614e4a69e23b8e3a http://git.qemu.org/?p=qemu.git;a=commit;h=a1b3955c9415b1e767c130a2f59fee6aa28e575b http://git.qemu.org/?p=qemu.git;a=commit;h=ce48f2f441ca98885267af6fd636a7cb804ee646 http://git.qemu.org/?p=qemu.git;a=commit;h=d65f97a82c4ed48374a764c769d4ba1ea9724e97 http://git.qemu.org/?p=qemu.git;a=commit;h=f56b9bc3ae20fc93815b34aa022be919941406ce https://bugzilla.redhat.com/show_bug.cgi?id=1079240 https://www.vulnerabilitycenter.com/#!vul=44767 Common Vulnerability Exposure (CVE) ID: CVE-2014-0145 https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html http://www.openwall.com/lists/oss-security/2014/03/26/8 Common Vulnerability Exposure (CVE) ID: CVE-2014-0146 Common Vulnerability Exposure (CVE) ID: CVE-2014-0147 http://git.qemu.org/?p=qemu.git;a=commitdiff;h=246f65838d19db6db55bfb41117c35645a2c4789 https://bugzilla.redhat.com/show_bug.cgi?id=1078848 https://bugzilla.redhat.com/show_bug.cgi?id=1086717 Common Vulnerability Exposure (CVE) ID: CVE-2014-0148 http://git.qemu.org/?p=qemu.git;a=commit;h=1d7678dec4761acdc43439da6ceda41a703ba1a6 https://bugzilla.redhat.com/show_bug.cgi?id=1078212 Common Vulnerability Exposure (CVE) ID: CVE-2014-0150 Debian Security Information: DSA-2909 (Google Search) http://www.debian.org/security/2014/dsa-2909 Debian Security Information: DSA-2910 (Google Search) http://www.debian.org/security/2014/dsa-2910 http://article.gmane.org/gmane.comp.emulators.qemu/266768 http://thread.gmane.org/gmane.comp.emulators.qemu/266713 http://secunia.com/advisories/57878 http://secunia.com/advisories/58191 http://www.ubuntu.com/usn/USN-2182-1
Copyright	Copyright (C) 2014 Greenbone Networks GmbH

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