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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0181 Important: rhev-hypervisor security and bug fix update 22 February 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rhev-hypervisor Publisher: Red Hat Operating System: RHEV Hypervisor 2.1 Impact/Access: Increased Privileges -- Remote with User Interaction Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2010-0309 CVE-2010-0306 CVE-2010-0298 CVE-2010-0097 CVE-2010-0001 CVE-2009-4538 CVE-2009-4537 CVE-2009-4536 CVE-2009-4355 CVE-2009-4272 CVE-2009-4212 CVE-2009-4141 CVE-2009-4138 CVE-2009-4021 CVE-2009-4020 CVE-2009-3939 CVE-2009-3889 CVE-2009-3736 CVE-2009-3563 CVE-2009-3556 CVE-2009-3080 CVE-2009-2958 CVE-2009-2957 CVE-2009-2910 CVE-2009-2730 CVE-2009-2409 CVE-2009-1189 CVE-2007-4567 CVE-2006-6304 Reference: ESB-2010.0162 ESB-2010.0139 ESB-2010.0101 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2010-0095.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: rhev-hypervisor security and bug fix update Advisory ID: RHSA-2010:0095-01 Product: Red Hat Enterprise Virtualization Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0095.html Issue date: 2010-02-09 CVE Names: CVE-2007-4567 CVE-2009-4272 CVE-2009-4536 CVE-2009-4537 CVE-2009-4538 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 ===================================================================== 1. Summary: An updated rhev-hypervisor package that fixes security issues and several bugs is now available. This update has been rated as having important security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: RHEV Hypervisor 2.1 - noarch 3. Description: The rhev-hypervisor package provides a Red Hat Enterprise Virtualization (RHEV) Hypervisor ISO disk image. The RHEV 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: RHEV Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the IPv6 Extension Header (EH) handling implementation in the Linux kernel. The skb->dst data structure was not properly validated in the ipv6_hop_jumbo() function. This could possibly lead to a remote denial of service. (CVE-2007-4567) The Parallels Virtuozzo Containers team reported two flaws in the routing implementation. If an attacker was able to cause a large enough number of collisions in the routing hash table (via specially-crafted packets) for the emergency route flush to trigger, a deadlock could occur. Secondly, if the kernel routing cache was disabled, an uninitialized pointer would be left behind after a route lookup, leading to a kernel panic. (CVE-2009-4272) A flaw was found in each of the following Intel PRO/1000 Linux drivers in the Linux kernel: e1000 and e1000e. A remote attacker using packets larger than the MTU could bypass the existing fragment check, resulting in partial, invalid frames being passed to the network stack. These flaws could also possibly be used to trigger a remote denial of service. (CVE-2009-4536, CVE-2009-4538) A flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. Receiving overly-long frames with a certain revision of the network cards supported by this driver could possibly result in a remote denial of service. (CVE-2009-4537) The x86 emulator implementation was missing a check for the Current Privilege Level (CPL) and I/O Privilege Level (IOPL). A user in a guest could leverage these flaws to cause a denial of service (guest crash) or possibly escalate their privileges within that guest. (CVE-2010-0298, CVE-2010-0306) A flaw was found in the Programmable Interval Timer (PIT) emulation. Access to the internal data structure pit_state, which represents the data state of the emulated PIT, was not properly validated in the pit_ioport_read() function. A privileged guest user could use this flaw to crash the host. (CVE-2010-0309) This updated package provides updated components that include fixes for security issues; however, these issues have no security impact for RHEV Hypervisor. These fixes are for kernel issues CVE-2006-6304, CVE-2009-2910, CVE-2009-3080, CVE-2009-3556, CVE-2009-3889, CVE-2009-3939, CVE-2009-4020, CVE-2009-4021, CVE-2009-4138, and CVE-2009-4141; ntp issue CVE-2009-3563; dbus issue CVE-2009-1189; dnsmasq issues CVE-2009-2957 and CVE-2009-2958; gnutls issue CVE-2009-2730; krb5 issue CVE-2009-4212; bind issue CVE-2010-0097; gzip issue CVE-2010-0001; openssl issues CVE-2009-2409 and CVE-2009-4355; and gcc issue CVE-2009-3736. This update also fixes the following bugs: * on systems with a large number of disk devices, USB storage devices may get enumerated after "/dev/sdz", for example, "/dev/sdcd". This was not handled by the udev rules, resulting in a missing "/dev/live" symbolic link, causing installations from USB media to fail. With this update, udev rules correctly handle USB storage devices on systems with a large number of disk devices, which resolves this issue. (BZ#555083) As RHEV Hypervisor is based on KVM, the bug fixes from the KVM update RHSA-2010:0088 have been included in this update: https://rhn.redhat.com/errata/RHSA-2010-0088.html Users of the Red Hat Enterprise Virtualization Hypervisor are advised to upgrade to this updated package, which corrects these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 545411 - CVE-2009-4272 kernel: emergency route cache flushing leads to node deadlock 548641 - CVE-2007-4567 kernel: ipv6_hop_jumbo remote system crash 550907 - CVE-2009-4537 kernel: r8169 issue reported at 26c3 551214 - CVE-2009-4538 kernel: e1000e frame fragment issue 552126 - CVE-2009-4536 kernel: e1000 issue reported at 26c3 559091 - CVE-2010-0298 kvm: emulator privilege escalation 560654 - CVE-2010-0306 kvm: emulator privilege escalation IOPL/CPL level check 560887 - CVE-2010-0309 kvm: cat /dev/port in guest cause the host hang 6. Package List: RHEV Hypervisor 2.1: Source: rhev-hypervisor-5.4-2.1.8.el5_4rhev2_1.src.rpm noarch: rhev-hypervisor-5.4-2.1.8.el5_4rhev2_1.noarch.rpm rhev-hypervisor-pxe-5.4-2.1.8.el5_4rhev2_1.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://www.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2007-4567.html https://www.redhat.com/security/data/cve/CVE-2009-4272.html https://www.redhat.com/security/data/cve/CVE-2009-4536.html https://www.redhat.com/security/data/cve/CVE-2009-4537.html https://www.redhat.com/security/data/cve/CVE-2009-4538.html https://www.redhat.com/security/data/cve/CVE-2010-0298.html https://www.redhat.com/security/data/cve/CVE-2010-0306.html https://www.redhat.com/security/data/cve/CVE-2010-0309.html http://www.redhat.com/security/updates/classification/#important https://rhn.redhat.com/errata/RHSA-2010-0088.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFLgdMJ/iFOrG6YcBERAp8VAJ4lLzKefzimlvYvhcGOCrZDKU+7nACg10Jh BNgybq0ZBIaRtjsKQNIpwDE= =ayzP -----END PGP SIGNATURE-----