Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0784 Important: kernel security and bug fix update 21 May 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Root Compromise -- Existing Account Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2014-0196 CVE-2014-0101 Reference: ESB-2014.0766 ESB-2014.0735 ESB-2014.0710 ESB-2014.0595 ESB-2014.0592 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2014-0520.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2014:0520-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0520.html Issue date: 2014-05-20 CVE Names: CVE-2014-0101 CVE-2014-0196 ===================================================================== 1. Summary: Updated kernel packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 6.2 Extended Update Support. 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 AUS (v. 6.2 server) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel processed an authenticated COOKIE_ECHO chunk during the initialization of an SCTP connection. A remote attacker could use this flaw to crash the system by initiating a specially crafted SCTP handshake in order to trigger a NULL pointer dereference on the system. (CVE-2014-0101, Important) * A race condition flaw, leading to heap-based buffer overflows, was found in the way the Linux kernel's N_TTY line discipline (LDISC) implementation handled concurrent processing of echo output and TTY write operations originating from user space when the underlying TTY driver was PTY. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-0196, Important) Red Hat would like to thank Nokia Siemens Networks for reporting CVE-2014-0101. This update also fixes the following bug: * Prior to this update, a guest-provided value was used as the head length of the socket buffer allocated on the host. If the host was under heavy memory load and the guest-provided value was too large, the allocation could have failed, resulting in stalls and packet drops in the guest's Tx path. With this update, the guest-provided value has been limited to a reasonable size so that socket buffer allocations on the host succeed regardless of the memory load on the host, and guests can send packets without experiencing packet drops or stalls. (BZ#1092349) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 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/site/articles/11258 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 (https://bugzilla.redhat.com/): 1070705 - CVE-2014-0101 kernel: net: sctp: null pointer dereference when processing authenticated cookie_echo chunk 1094232 - CVE-2014-0196 kernel: pty layer race condition leading to memory corruption 6. Package List: Red Hat Enterprise Linux AUS (v. 6.2 server): Source: kernel-2.6.32-220.51.1.el6.src.rpm noarch: kernel-doc-2.6.32-220.51.1.el6.noarch.rpm kernel-firmware-2.6.32-220.51.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.51.1.el6.x86_64.rpm kernel-devel-2.6.32-220.51.1.el6.x86_64.rpm kernel-headers-2.6.32-220.51.1.el6.x86_64.rpm perf-2.6.32-220.51.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.2): Source: kernel-2.6.32-220.51.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.51.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.51.1.el6.x86_64.rpm python-perf-2.6.32-220.51.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.51.1.el6.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-2014-0101.html https://www.redhat.com/security/data/cve/CVE-2014-0196.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFTezblXlSAg2UNWIIRAmwqAJ4iqO38Q7yoerug1+H3HoqaDatihQCglxfr WO2lCHAkHLamTSZIOqFVk6Q= =ofqj - -----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 iQIVAwUBU3wfuRLndAQH1ShLAQI1rA//bU++rbLPwopPc4ThfVArUFnxup9lmbdP ep/HnLFxppb8OjPbhFXkMnbvuY6era+wmnqRPQvk8JITLRLaxF8rkU1rv6td/Oc5 rTHIRUOa9sxeA+0xLm4kl2HdOeAczFPE66J1/44b8P7Q88Ozfj2T+ukfznLPjBRK vewLUBlVS+sMoUbVltatky9GMa6BZn0jNwv/VR4rgOJCM5v5GJPD29fg0iIu3Nix SiBXttpSQWbyqnXii36a3tQ1HTexqNjRq90R3L0HJJ58FaDLoyoxebks/6NpRNHl k3AQmLDR5/kuHd2Iw3dYSrxcdeJoWoHvfxu4f7CEFLqZEwQJEa4FYn+i5jaDxYcL ViBe7ksF6TFhiAGlb+vOGvhK9yC9Swviii5+qxCGT98hagV2TidK+WEm+SNZecjx jG96D2+F2JKtJIIwht3UrUzVJTG3hNCA09Tu5lK6+HelKtqpZUzvMRt1mA+MaXRK iolxDFeZGKJjZr/yrlQl6Z7CpLc9AnoB4TiEH7CfmEBBz1amWhp4Gn3ecq7Cbq8v k3yTLpOJzoxgliuciCYZAzmwgXzEszhXRPiSu9Eev2JJZoTgtE7LLxQXZBi35yRI qgWoY2Bqoz5gxaQt0oWidJ1QFfGb4yAwoehL4n2N53XadWU+EJemlhI/JEwqS5s1 hYf5rROEUBA= =Qdeu -----END PGP SIGNATURE-----