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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.1062 Important: kernel security, bug fix, and enhancement update 21 October 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 5 Impact/Access: Increased Privileges -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote with User Interaction Unauthorised Access -- Remote with User Interaction Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2011-3347 CVE-2011-3209 CVE-2011-3191 CVE-2011-3188 CVE-2011-3131 CVE-2011-2942 CVE-2011-2723 CVE-2011-2699 CVE-2011-2695 CVE-2011-2496 CVE-2011-2484 CVE-2011-1833 CVE-2011-1585 CVE-2011-1160 CVE-2009-4067 Reference: ESB-2011.1002 ESB-2011.0958 ESB-2011.0930 ESB-2011.0893 ESB-2011.0866 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-1386.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2011:1386-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1386.html Issue date: 2011-10-20 CVE Names: CVE-2009-4067 CVE-2011-1160 CVE-2011-1585 CVE-2011-1833 CVE-2011-2484 CVE-2011-2496 CVE-2011-2695 CVE-2011-2699 CVE-2011-2723 CVE-2011-2942 CVE-2011-3131 CVE-2011-3188 CVE-2011-3191 CVE-2011-3209 CVE-2011-3347 ===================================================================== 1. Summary: Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important 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: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes: * The maximum file offset handling for ext4 file systems could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2695, Important) * IPv6 fragment identification value generation could allow a remote attacker to disrupt a target system's networking, preventing legitimate users from accessing its services. (CVE-2011-2699, Important) * A malicious CIFS (Common Internet File System) server could send a specially-crafted response to a directory read request that would result in a denial of service or privilege escalation on a system that has a CIFS share mounted. (CVE-2011-3191, Important) * A local attacker could use mount.ecryptfs_private to mount (and then access) a directory they would otherwise not have access to. Note: To correct this issue, the RHSA-2011:1241 ecryptfs-utils update must also be installed. (CVE-2011-1833, Moderate) * A flaw in the taskstats subsystem could allow a local, unprivileged user to cause excessive CPU time and memory use. (CVE-2011-2484, Moderate) * Mapping expansion handling could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2496, Moderate) * GRO (Generic Receive Offload) fields could be left in an inconsistent state. An attacker on the local network could use this flaw to cause a denial of service. GRO is enabled by default in all network drivers that support it. (CVE-2011-2723, Moderate) * RHSA-2011:1065 introduced a regression in the Ethernet bridge implementation. If a system had an interface in a bridge, and an attacker on the local network could send packets to that interface, they could cause a denial of service on that system. Xen hypervisor and KVM (Kernel-based Virtual Machine) hosts often deploy bridge interfaces. (CVE-2011-2942, Moderate) * A flaw in the Xen hypervisor IOMMU error handling implementation could allow a privileged guest user, within a guest operating system that has direct control of a PCI device, to cause performance degradation on the host and possibly cause it to hang. (CVE-2011-3131, Moderate) * IPv4 and IPv6 protocol sequence number and fragment ID generation could allow a man-in-the-middle attacker to inject packets and possibly hijack connections. Protocol sequence number and fragment IDs are now more random. (CVE-2011-3188, Moderate) * A flaw in the kernel's clock implementation could allow a local, unprivileged user to cause a denial of service. (CVE-2011-3209, Moderate) * Non-member VLAN (virtual LAN) packet handling for interfaces in promiscuous mode and also using the be2net driver could allow an attacker on the local network to cause a denial of service. (CVE-2011-3347, Moderate) * A flaw in the auerswald USB driver could allow a local, unprivileged user to cause a denial of service or escalate their privileges by inserting a specially-crafted USB device. (CVE-2009-4067, Low) * A flaw in the Trusted Platform Module (TPM) implementation could allow a local, unprivileged user to leak information to user space. (CVE-2011-1160, Low) * A local, unprivileged user could possibly mount a CIFS share that requires authentication without knowing the correct password if the mount was already mounted by another local user. (CVE-2011-1585, Low) Red Hat would like to thank Fernando Gont for reporting CVE-2011-2699; Darren Lavender for reporting CVE-2011-3191; the Ubuntu Security Team for reporting CVE-2011-1833; Vasiliy Kulikov of Openwall for reporting CVE-2011-2484; Robert Swiecki for reporting CVE-2011-2496; Brent Meshier for reporting CVE-2011-2723; Dan Kaminsky for reporting CVE-2011-3188; Yasuaki Ishimatsu for reporting CVE-2011-3209; Somnath Kotur for reporting CVE-2011-3347; Rafael Dominguez Vega for reporting CVE-2009-4067; and Peter Huewe for reporting CVE-2011-1160. The Ubuntu Security Team acknowledges Vasiliy Kulikov of Openwall and Dan Rosenberg as the original reporters of CVE-2011-1833. 4. Solution: This update also fixes several bugs and adds one enhancement. Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section. Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect. Before applying this update, make sure all previously-released errata relevant to your system have been applied. 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/kb/docs/DOC-11259 To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system. 5. Bugs fixed (http://bugzilla.redhat.com/): 684671 - CVE-2011-1160 kernel: tpm infoleaks 697394 - CVE-2011-1585 kernel: cifs session reuse 715436 - CVE-2011-2484 kernel: taskstats: duplicate entries in listener mode can lead to DoS 716538 - CVE-2011-2496 kernel: mm: avoid wrapping vm_pgoff in mremap() and stack expansions 722393 - CVE-2009-4067 kernel: usb: buffer overflow in auerswald_probe() 722557 - CVE-2011-2695 kernel: ext4: kernel panic when writing data to the last block of sparse file 723429 - CVE-2011-2699 kernel: ipv6: make fragment identifications less predictable 726552 - CVE-2011-2723 kernel: gro: only reset frag0 when skb can be pulled 728518 - win2003 i386 guest BSOD when created with e1000 nic [rhel-5.7.z] 730341 - CVE-2011-3131 kernel: xen: IOMMU fault livelock 730682 - [EL5.7] igb: failed to activate WOL on 2nd LAN port on i350 [rhel-5.7.z] 730686 - Huge performance regression in NFS client [rhel-5.7.z] 730917 - CVE-2011-2942 kernel: bridge: null pointer dereference in __br_deliver 731172 - CVE-2011-1833 kernel: ecryptfs: mount source TOCTOU race 732658 - CVE-2011-3188 kernel: net: improve sequence number generation 732869 - CVE-2011-3191 kernel: cifs: signedness issue in CIFSFindNext() 732878 - CVE-2011-3209 kernel: panic occurs when clock_gettime() is called 733665 - Incorrect values in /proc/sys/vm/dirty_writeback_centises and dirty_expire_centisecs [rhel-5.7.z] 736425 - CVE-2011-3347 kernel: be2net: promiscuous mode and non-member VLAN packets DoS 738389 - Patch needed to allow MTU >1500 on vif prior to connecting to bridge [rhel-5.7.z] 738392 - netfront MTU drops to 1500 after domain migration [rhel-5.7.z] 739823 - 2.6.18-238.1.1.el5 or newer won't boot under Xen HVM due to linux-2.6-virt-nmi-don-t-print-nmi-stuck-messages-on-guests.patch [rhel-5.7.z] 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-274.7.1.el5.src.rpm i386: kernel-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-devel-2.6.18-274.7.1.el5.i686.rpm kernel-debug-2.6.18-274.7.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-debug-devel-2.6.18-274.7.1.el5.i686.rpm kernel-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.i686.rpm kernel-devel-2.6.18-274.7.1.el5.i686.rpm kernel-headers-2.6.18-274.7.1.el5.i386.rpm kernel-xen-2.6.18-274.7.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-xen-devel-2.6.18-274.7.1.el5.i686.rpm noarch: kernel-doc-2.6.18-274.7.1.el5.noarch.rpm x86_64: kernel-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-274.7.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.x86_64.rpm kernel-devel-2.6.18-274.7.1.el5.x86_64.rpm kernel-headers-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-274.7.1.el5.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-274.7.1.el5.src.rpm i386: kernel-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-PAE-devel-2.6.18-274.7.1.el5.i686.rpm kernel-debug-2.6.18-274.7.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-debug-devel-2.6.18-274.7.1.el5.i686.rpm kernel-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.i686.rpm kernel-devel-2.6.18-274.7.1.el5.i686.rpm kernel-headers-2.6.18-274.7.1.el5.i386.rpm kernel-xen-2.6.18-274.7.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-274.7.1.el5.i686.rpm kernel-xen-devel-2.6.18-274.7.1.el5.i686.rpm ia64: kernel-2.6.18-274.7.1.el5.ia64.rpm kernel-debug-2.6.18-274.7.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.ia64.rpm kernel-debug-devel-2.6.18-274.7.1.el5.ia64.rpm kernel-debuginfo-2.6.18-274.7.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.ia64.rpm kernel-devel-2.6.18-274.7.1.el5.ia64.rpm kernel-headers-2.6.18-274.7.1.el5.ia64.rpm kernel-xen-2.6.18-274.7.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-274.7.1.el5.ia64.rpm kernel-xen-devel-2.6.18-274.7.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-274.7.1.el5.noarch.rpm ppc: kernel-2.6.18-274.7.1.el5.ppc64.rpm kernel-debug-2.6.18-274.7.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-274.7.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-274.7.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.ppc64.rpm kernel-devel-2.6.18-274.7.1.el5.ppc64.rpm kernel-headers-2.6.18-274.7.1.el5.ppc.rpm kernel-headers-2.6.18-274.7.1.el5.ppc64.rpm kernel-kdump-2.6.18-274.7.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-274.7.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-274.7.1.el5.ppc64.rpm s390x: kernel-2.6.18-274.7.1.el5.s390x.rpm kernel-debug-2.6.18-274.7.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.s390x.rpm kernel-debug-devel-2.6.18-274.7.1.el5.s390x.rpm kernel-debuginfo-2.6.18-274.7.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.s390x.rpm kernel-devel-2.6.18-274.7.1.el5.s390x.rpm kernel-headers-2.6.18-274.7.1.el5.s390x.rpm kernel-kdump-2.6.18-274.7.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-274.7.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-274.7.1.el5.s390x.rpm x86_64: kernel-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-274.7.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-274.7.1.el5.x86_64.rpm kernel-devel-2.6.18-274.7.1.el5.x86_64.rpm kernel-headers-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-274.7.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-274.7.1.el5.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/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2009-4067.html https://www.redhat.com/security/data/cve/CVE-2011-1160.html https://www.redhat.com/security/data/cve/CVE-2011-1585.html https://www.redhat.com/security/data/cve/CVE-2011-1833.html https://www.redhat.com/security/data/cve/CVE-2011-2484.html https://www.redhat.com/security/data/cve/CVE-2011-2496.html https://www.redhat.com/security/data/cve/CVE-2011-2695.html https://www.redhat.com/security/data/cve/CVE-2011-2699.html https://www.redhat.com/security/data/cve/CVE-2011-2723.html https://www.redhat.com/security/data/cve/CVE-2011-2942.html https://www.redhat.com/security/data/cve/CVE-2011-3131.html https://www.redhat.com/security/data/cve/CVE-2011-3188.html https://www.redhat.com/security/data/cve/CVE-2011-3191.html https://www.redhat.com/security/data/cve/CVE-2011-3209.html https://www.redhat.com/security/data/cve/CVE-2011-3347.html https://access.redhat.com/security/updates/classification/#important https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_Notes/kernel.html#RHSA-2011-1386 https://rhn.redhat.com/errata/RHSA-2011-1241.html https://rhn.redhat.com/errata/RHSA-2011-1065.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFOoFwHXlSAg2UNWIIRAjeRAJ96y38FGmEtyTMBRZFSXh0DzC5ryQCgqSPG /bUSsPcuZoEItpFWsA7sg0o= =SPIP - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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