Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0230 Moderate: kernel security and bug fix update 2 March 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: Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2010-4655 CVE-2010-4251 CVE-2010-4249 Reference: ESB-2011.0187 ESB-2011.0052 ESB-2011.0029 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2011-0303.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security and bug fix update Advisory ID: RHSA-2011:0303-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0303.html Issue date: 2011-03-01 CVE Names: CVE-2010-4249 CVE-2010-4251 CVE-2010-4655 ===================================================================== 1. Summary: Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate 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. This update fixes the following security issues: * A flaw was found in the Linux kernel's garbage collector for AF_UNIX sockets. A local, unprivileged user could use this flaw to trigger a denial of service (out-of-memory condition). (CVE-2010-4249, Moderate) * A flaw was found in the Linux kernel's networking subsystem. If the number of packets received exceeded the receiver's buffer limit, they were queued in a backlog, consuming memory, instead of being discarded. A remote attacker could abuse this flaw to cause a denial of service (out-of-memory condition). (CVE-2010-4251, Moderate) * A missing initialization flaw was found in the ethtool_get_regs() function in the Linux kernel's ethtool IOCTL handler. A local user who has the CAP_NET_ADMIN capability could use this flaw to cause an information leak. (CVE-2010-4655, Low) Red Hat would like to thank Vegard Nossum for reporting CVE-2010-4249, and Kees Cook for reporting CVE-2010-4655. This update also fixes several bugs. Documentation for these bug fixes 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 noted in the Technical Notes. The system must be rebooted 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. 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/): 656756 - CVE-2010-4249 kernel: unix socket local dos 657303 - CVE-2010-4251 kernel: multicast IPv4 traffic on hipersockets device DoS 668976 - a test unit ready causes a panic on 5.6 (CCISS driver) [rhel-5.6.z] 669300 - Fix shrinking windows with window scaling [rhel-5.6.z] 670797 - panic in kfree() due to race condition in acpi_bus_receive_event() [rhel-5.6.z] 670807 - e1000 driver tracebacks when running under VMware ESX4 [rhel-5.6.z] 672428 - CVE-2010-4655 kernel: heap contents leak for CAP_NET_ADMIN via ethtool ioctl 673983 - virtio_console driver never returns from selecting for write when the queue is full [rhel-5.6.z] 674273 - Flapping errors (and panic) with bonding and arp_interval while using be2net included in 2.6.18-238 [rhel-5.6.z] 678613 - vdso gettimeofday causes a segmentation fault [rhel-5.6.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-2.6.18-238.5.1.el5.src.rpm i386: kernel-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-devel-2.6.18-238.5.1.el5.i686.rpm kernel-debug-2.6.18-238.5.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-debug-devel-2.6.18-238.5.1.el5.i686.rpm kernel-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.i686.rpm kernel-devel-2.6.18-238.5.1.el5.i686.rpm kernel-headers-2.6.18-238.5.1.el5.i386.rpm kernel-xen-2.6.18-238.5.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-xen-devel-2.6.18-238.5.1.el5.i686.rpm noarch: kernel-doc-2.6.18-238.5.1.el5.noarch.rpm x86_64: kernel-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-238.5.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.x86_64.rpm kernel-devel-2.6.18-238.5.1.el5.x86_64.rpm kernel-headers-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-238.5.1.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-2.6.18-238.5.1.el5.src.rpm i386: kernel-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-PAE-devel-2.6.18-238.5.1.el5.i686.rpm kernel-debug-2.6.18-238.5.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-debug-devel-2.6.18-238.5.1.el5.i686.rpm kernel-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.i686.rpm kernel-devel-2.6.18-238.5.1.el5.i686.rpm kernel-headers-2.6.18-238.5.1.el5.i386.rpm kernel-xen-2.6.18-238.5.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-238.5.1.el5.i686.rpm kernel-xen-devel-2.6.18-238.5.1.el5.i686.rpm ia64: kernel-2.6.18-238.5.1.el5.ia64.rpm kernel-debug-2.6.18-238.5.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.ia64.rpm kernel-debug-devel-2.6.18-238.5.1.el5.ia64.rpm kernel-debuginfo-2.6.18-238.5.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.ia64.rpm kernel-devel-2.6.18-238.5.1.el5.ia64.rpm kernel-headers-2.6.18-238.5.1.el5.ia64.rpm kernel-xen-2.6.18-238.5.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-238.5.1.el5.ia64.rpm kernel-xen-devel-2.6.18-238.5.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-238.5.1.el5.noarch.rpm ppc: kernel-2.6.18-238.5.1.el5.ppc64.rpm kernel-debug-2.6.18-238.5.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-238.5.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.ppc64.rpm kernel-devel-2.6.18-238.5.1.el5.ppc64.rpm kernel-headers-2.6.18-238.5.1.el5.ppc.rpm kernel-headers-2.6.18-238.5.1.el5.ppc64.rpm kernel-kdump-2.6.18-238.5.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-238.5.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-238.5.1.el5.ppc64.rpm s390x: kernel-2.6.18-238.5.1.el5.s390x.rpm kernel-debug-2.6.18-238.5.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.s390x.rpm kernel-debug-devel-2.6.18-238.5.1.el5.s390x.rpm kernel-debuginfo-2.6.18-238.5.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.s390x.rpm kernel-devel-2.6.18-238.5.1.el5.s390x.rpm kernel-headers-2.6.18-238.5.1.el5.s390x.rpm kernel-kdump-2.6.18-238.5.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-238.5.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-238.5.1.el5.s390x.rpm x86_64: kernel-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-238.5.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-238.5.1.el5.x86_64.rpm kernel-devel-2.6.18-238.5.1.el5.x86_64.rpm kernel-headers-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-238.5.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-238.5.1.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-2010-4249.html https://www.redhat.com/security/data/cve/CVE-2010-4251.html https://www.redhat.com/security/data/cve/CVE-2010-4655.html https://access.redhat.com/security/updates/classification/#moderate http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.6_Technical_Notes/kernel.html#RHSA-2011-0303 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFNbXcgXlSAg2UNWIIRAr0uAJwKZvZJ4Z6mPXHZNE73+vuJEZtqoQCfR6eq yLEklAnT8uIk2AmSg8uYVEQ= =srAl - -----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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFNbauc/iFOrG6YcBERApY6AKCIZR4U65ifS9r0A6FyGwMKrckkuwCgpWPe wMPNlnB0BzcVdXAGhLqLxfI= =KSbr -----END PGP SIGNATURE-----