-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: rhev-hypervisor6 security update Advisory ID: RHSA-2015:0126-01 Product: Red Hat Enterprise Virtualization Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0126.html Issue date: 2015-02-04 CVE Names: CVE-2014-3511 CVE-2014-3567 CVE-2014-3611 CVE-2014-3645 CVE-2014-3646 CVE-2015-0235 ===================================================================== 1. Summary: An updated rhev-hypervisor6 package that fixes multiple security issues is now available for Red Hat Enterprise Virtualization 3. Red Hat Product Security has rated this update as having Critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: RHEV Hypervisor for RHEL-6 - noarch 3. Description: The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: a subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A heap-based buffer overflow was found in glibc's __nss_hostname_digits_dots() function, which is used by the gethostbyname() and gethostbyname2() glibc function calls. A remote attacker able to make an application call either of these functions could use this flaw to execute arbitrary code with the permissions of the user running the application. (CVE-2015-0235) A race condition flaw was found in the way the Linux kernel's KVM subsystem handled PIT (Programmable Interval Timer) emulation. A guest user who has access to the PIT I/O ports could use this flaw to crash the host. (CVE-2014-3611) A flaw was found in the way OpenSSL handled fragmented handshake packets. A man-in-the-middle attacker could use this flaw to force a TLS/SSL server using OpenSSL to use TLS 1.0, even if both the client and the server supported newer protocol versions. (CVE-2014-3511) A memory leak flaw was found in the way an OpenSSL handled failed session ticket integrity checks. A remote attacker could exhaust all available memory of an SSL/TLS or DTLS server by sending a large number of invalid session tickets to that server. (CVE-2014-3567) It was found that the Linux kernel's KVM subsystem did not handle the VM exits gracefully for the invept (Invalidate Translations Derived from EPT) and invvpid (Invalidate Translations Based on VPID) instructions. On hosts with an Intel processor and invept/invppid VM exit support, an unprivileged guest user could use these instructions to crash the guest. (CVE-2014-3645, CVE-2014-3646) Red Hat would like to thank Qualys for reporting the CVE-2015-0235 issue, Lars Bull of Google for reporting the CVE-2014-3611 issue, and the Advanced Threat Research team at Intel Security for reporting the CVE-2014-3645 and CVE-2014-3646 issues. Users of the Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package. 4. Solution: This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258 To upgrade Hypervisors in Red Hat Enterprise Virtualization environments using the disk image provided by this package, refer to: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/ht ml/Hypervisor_Deployment_Guide/chap-Deployment_Guide-Upgrading_Red_Hat_Ente rprise_Virtualization_Hypervisors.html 5. Bugs fixed (https://bugzilla.redhat.com/): 1127504 - CVE-2014-3511 openssl: TLS protocol downgrade attack 1144825 - CVE-2014-3646 kernel: kvm: vmx: invvpid vm exit not handled 1144835 - CVE-2014-3645 kernel: kvm: vmx: invept vm exit not handled 1144878 - CVE-2014-3611 kernel: kvm: PIT timer race condition 1152563 - Tracker: RHEV-H 6.6 for RHEV 3.4.z build 1152961 - CVE-2014-3567 openssl: Invalid TLS/SSL session tickets could cause memory leak leading to server crash 1180044 - Incorrect glusterfs package in to RHEVH 6.6 for 3.4.4 and 3.5 build [rhev-3.4.z] 1183461 - CVE-2015-0235 glibc: __nss_hostname_digits_dots() heap-based buffer overflow 1185720 - Incorrect rhn-virtualization-host and rhn-virtualization-common packages in RHEVH 6.6 for rhev 3.4.5 6. Package List: RHEV Hypervisor for RHEL-6: noarch: rhev-hypervisor6-6.6-20150123.1.el6ev.noarch.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-2014-3511 https://access.redhat.com/security/cve/CVE-2014-3567 https://access.redhat.com/security/cve/CVE-2014-3611 https://access.redhat.com/security/cve/CVE-2014-3645 https://access.redhat.com/security/cve/CVE-2014-3646 https://access.redhat.com/security/cve/CVE-2015-0235 https://access.redhat.com/security/updates/classification/#critical 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 iD8DBQFU0l7LXlSAg2UNWIIRAvEdAJ4wGHkcIyH+VhN8Me+wQpBWbHgMiQCdH58Q EXI2+hZZswncCxMn6NgpQ6g= =wy8T -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce