-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: qemu-kvm security update Advisory ID: RHSA-2015:1943-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1943.html Issue date: 2015-10-27 CVE Names: CVE-2015-1779 ===================================================================== 1. Summary: Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: 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. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1199572 - CVE-2015-1779 qemu: vnc: insufficient resource limiting in VNC websockets decoder 1273098 - qemu-kvm build failure race condition in tests/ide-test 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.8.src.rpm x86_64: libcacard-1.5.3-86.el7_1.8.i686.rpm libcacard-1.5.3-86.el7_1.8.x86_64.rpm qemu-img-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: libcacard-devel-1.5.3-86.el7_1.8.i686.rpm libcacard-devel-1.5.3-86.el7_1.8.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.8.src.rpm x86_64: libcacard-1.5.3-86.el7_1.8.i686.rpm libcacard-1.5.3-86.el7_1.8.x86_64.rpm libcacard-devel-1.5.3-86.el7_1.8.i686.rpm libcacard-devel-1.5.3-86.el7_1.8.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.8.x86_64.rpm qemu-img-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.8.src.rpm ppc64: qemu-img-1.5.3-86.el7_1.8.ppc64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.ppc64.rpm x86_64: libcacard-1.5.3-86.el7_1.8.i686.rpm libcacard-1.5.3-86.el7_1.8.x86_64.rpm qemu-img-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: libcacard-1.5.3-86.el7_1.8.ppc.rpm libcacard-1.5.3-86.el7_1.8.ppc64.rpm libcacard-devel-1.5.3-86.el7_1.8.ppc.rpm libcacard-devel-1.5.3-86.el7_1.8.ppc64.rpm libcacard-tools-1.5.3-86.el7_1.8.ppc64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.ppc.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.ppc64.rpm x86_64: libcacard-devel-1.5.3-86.el7_1.8.i686.rpm libcacard-devel-1.5.3-86.el7_1.8.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: qemu-kvm-1.5.3-86.el7_1.8.src.rpm x86_64: libcacard-1.5.3-86.el7_1.8.i686.rpm libcacard-1.5.3-86.el7_1.8.x86_64.rpm qemu-img-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-common-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-tools-1.5.3-86.el7_1.8.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: libcacard-devel-1.5.3-86.el7_1.8.i686.rpm libcacard-devel-1.5.3-86.el7_1.8.x86_64.rpm libcacard-tools-1.5.3-86.el7_1.8.x86_64.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.i686.rpm qemu-kvm-debuginfo-1.5.3-86.el7_1.8.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2015-1779 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFWLzz5XlSAg2UNWIIRApH7AJ9cEK6ok1WIsf8hf4R57VoZUKADHwCgkol/ loI4EWjrbUklXCUJHhUP6So= =nRFr -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce