Test ID:	1.3.6.1.4.1.25623.1.0.871466
Category:	Red Hat Local Security Checks
Title:	RedHat Update for qemu-kvm RHSA-2015:1943-01
Summary:	The remote host is missing an update for the 'qemu-kvm'; package(s) announced via the referenced advisory.
Description:	Summary: The remote host is missing an update for the 'qemu-kvm' 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. It was found that the QEMU's websocket frame decoder processed incoming frames without limiting resources used to process the header and the payload. An attacker able to access a guest's VNC console could use this flaw to trigger a denial of service on the host by exhausting all available memory and CPU. (CVE-2015-1779) This issue was discovered by Daniel P. Berrange of Red Hat. All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. 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-kvm on Red Hat Enterprise Linux Server (v. 7) 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-2015-1779 1033975 http://www.securitytracker.com/id/1033975 73303 http://www.securityfocus.com/bid/73303 DSA-3259 http://www.debian.org/security/2015/dsa-3259 FEDORA-2015-5482 http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154656.html FEDORA-2015-5541 http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155196.html GLSA-201602-01 https://security.gentoo.org/glsa/201602-01 RHSA-2015:1931 http://rhn.redhat.com/errata/RHSA-2015-1931.html RHSA-2015:1943 http://rhn.redhat.com/errata/RHSA-2015-1943.html SUSE-SU-2015:0870 http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00033.html SUSE-SU-2015:0896 http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00042.html USN-2608-1 http://www.ubuntu.com/usn/USN-2608-1 [Qemu-devel] 20150323 [PATCH 0/2] CVE-2015-1779: fix denial of service in VNC websockets https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04894.html [Qemu-devel] 20150323 [PATCH 1/2] CVE-2015-1779: incrementally decode websocket frames https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04896.html [Qemu-devel] 20150323 [PATCH 2/2] CVE-2015-1779: limit size of HTTP headers from websockets clients https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04895.html [oss-security] 20150324 CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder http://www.openwall.com/lists/oss-security/2015/03/24/9 [oss-security] 20150409 Re: CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder http://www.openwall.com/lists/oss-security/2015/04/09/6 http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
Copyright	Copyright (C) 2015 Greenbone AG

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