Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0938 Important: kernel security and bug fix update 3 October 2012 =========================================================================== 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 -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-3510 CVE-2012-3430 CVE-2012-3412 CVE-2012-2319 CVE-2009-4020 Reference: ESB-2012.0917 ESB-2010.0058 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-1323.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-2012:1323-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1323.html Issue date: 2012-10-02 CVE Names: CVE-2012-2319 CVE-2012-3412 CVE-2012-3430 CVE-2012-3510 ===================================================================== 1. Summary: Updated kernel packages that fix multiple 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 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. This update fixes the following security issues: * A flaw was found in the way socket buffers (skb) requiring TSO (TCP segment offloading) were handled by the sfc driver. If the skb did not fit within the minimum-size of the transmission queue, the network card could repeatedly reset itself. A remote attacker could use this flaw to cause a denial of service. (CVE-2012-3412, Important) * A use-after-free flaw was found in the xacct_add_tsk() function in the Linux kernel's taskstats subsystem. A local, unprivileged user could use this flaw to cause an information leak or a denial of service. (CVE-2012-3510, Moderate) * A buffer overflow flaw was found in the hfs_bnode_read() function in the HFS Plus (HFS+) file system implementation in the Linux kernel. A local user able to mount a specially-crafted HFS+ file system image could use this flaw to cause a denial of service or escalate their privileges. (CVE-2012-2319, Low) * A flaw was found in the way the msg_namelen variable in the rds_recvmsg() function of the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation was initialized. A local, unprivileged user could use this flaw to leak kernel stack memory to user-space. (CVE-2012-3430, Low) Red Hat would like to thank Ben Hutchings of Solarflare (tm) for reporting CVE-2012-3412, and Alexander Peslyak for reporting CVE-2012-3510. The CVE-2012-3430 issue was discovered by the Red Hat InfiniBand team. This update also fixes the following bugs: * The cpuid_whitelist() function, masking the Enhanced Intel SpeedStep (EST) flag from all guests, prevented the "cpuspeed" service from working in the privileged Xen domain (dom0). CPU scaling was therefore not possible. With this update, cpuid_whitelist() is aware whether the domain executing CPUID is privileged or not, and enables the EST flag for dom0. (BZ#846125) * If a delayed-allocation write was performed before quota was enabled, the kernel displayed the following warning message: WARNING: at fs/quota/dquot.c:988 dquot_claim_space+0x77/0x112() This was because information about the delayed allocation was not recorded in the quota structure. With this update, writes prior to enabling quota are properly accounted for, and the message is not displayed. (BZ#847326) * In Red Hat Enterprise Linux 5.9, the DSCP (Differentiated Services Code Point) netfilter module now supports mangling of the DSCP field. (BZ#847327) * Some subsystems clear the TIF_SIGPENDING flag during error handling in fork() paths. Previously, if the flag was cleared, the ERESTARTNOINTR error code could be returned. The underlying source code has been modified so that the error code is no longer returned. (BZ#847359) * An unnecessary check for the RXCW.CW bit could cause the Intel e1000e NIC (Network Interface Controller) to not work properly. The check has been removed so that the Intel e1000e NIC works as expected. (BZ#852448) Users should 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/knowledge/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 (http://bugzilla.redhat.com/): 819471 - CVE-2012-2319 kernel: Buffer overflow in the HFS plus filesystem (different issue than CVE-2009-4020) 820039 - CVE-2012-3430 kernel: recv{from,msg}() on an rds socket can leak kernel memory 844714 - CVE-2012-3412 kernel: sfc: potential remote denial of service through TCP MSS option 847326 - WARNING: at fs/dquot.c:814 dquot_claim_reserved_space() in dmesg [rhel-5.8.z] 849722 - CVE-2012-3510 kernel: taskstats: use-after-free in xacct_add_tsk() 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-2.6.18-308.16.1.el5.src.rpm i386: kernel-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-devel-2.6.18-308.16.1.el5.i686.rpm kernel-debug-2.6.18-308.16.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-debug-devel-2.6.18-308.16.1.el5.i686.rpm kernel-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.i686.rpm kernel-devel-2.6.18-308.16.1.el5.i686.rpm kernel-headers-2.6.18-308.16.1.el5.i386.rpm kernel-xen-2.6.18-308.16.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-xen-devel-2.6.18-308.16.1.el5.i686.rpm noarch: kernel-doc-2.6.18-308.16.1.el5.noarch.rpm x86_64: kernel-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-308.16.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.x86_64.rpm kernel-devel-2.6.18-308.16.1.el5.x86_64.rpm kernel-headers-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-308.16.1.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-2.6.18-308.16.1.el5.src.rpm i386: kernel-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-PAE-devel-2.6.18-308.16.1.el5.i686.rpm kernel-debug-2.6.18-308.16.1.el5.i686.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-debug-devel-2.6.18-308.16.1.el5.i686.rpm kernel-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.i686.rpm kernel-devel-2.6.18-308.16.1.el5.i686.rpm kernel-headers-2.6.18-308.16.1.el5.i386.rpm kernel-xen-2.6.18-308.16.1.el5.i686.rpm kernel-xen-debuginfo-2.6.18-308.16.1.el5.i686.rpm kernel-xen-devel-2.6.18-308.16.1.el5.i686.rpm ia64: kernel-2.6.18-308.16.1.el5.ia64.rpm kernel-debug-2.6.18-308.16.1.el5.ia64.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.ia64.rpm kernel-debug-devel-2.6.18-308.16.1.el5.ia64.rpm kernel-debuginfo-2.6.18-308.16.1.el5.ia64.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.ia64.rpm kernel-devel-2.6.18-308.16.1.el5.ia64.rpm kernel-headers-2.6.18-308.16.1.el5.ia64.rpm kernel-xen-2.6.18-308.16.1.el5.ia64.rpm kernel-xen-debuginfo-2.6.18-308.16.1.el5.ia64.rpm kernel-xen-devel-2.6.18-308.16.1.el5.ia64.rpm noarch: kernel-doc-2.6.18-308.16.1.el5.noarch.rpm ppc: kernel-2.6.18-308.16.1.el5.ppc64.rpm kernel-debug-2.6.18-308.16.1.el5.ppc64.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.ppc64.rpm kernel-debug-devel-2.6.18-308.16.1.el5.ppc64.rpm kernel-debuginfo-2.6.18-308.16.1.el5.ppc64.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.ppc64.rpm kernel-devel-2.6.18-308.16.1.el5.ppc64.rpm kernel-headers-2.6.18-308.16.1.el5.ppc.rpm kernel-headers-2.6.18-308.16.1.el5.ppc64.rpm kernel-kdump-2.6.18-308.16.1.el5.ppc64.rpm kernel-kdump-debuginfo-2.6.18-308.16.1.el5.ppc64.rpm kernel-kdump-devel-2.6.18-308.16.1.el5.ppc64.rpm s390x: kernel-2.6.18-308.16.1.el5.s390x.rpm kernel-debug-2.6.18-308.16.1.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.s390x.rpm kernel-debug-devel-2.6.18-308.16.1.el5.s390x.rpm kernel-debuginfo-2.6.18-308.16.1.el5.s390x.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.s390x.rpm kernel-devel-2.6.18-308.16.1.el5.s390x.rpm kernel-headers-2.6.18-308.16.1.el5.s390x.rpm kernel-kdump-2.6.18-308.16.1.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-308.16.1.el5.s390x.rpm kernel-kdump-devel-2.6.18-308.16.1.el5.s390x.rpm x86_64: kernel-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-debug-devel-2.6.18-308.16.1.el5.x86_64.rpm kernel-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-308.16.1.el5.x86_64.rpm kernel-devel-2.6.18-308.16.1.el5.x86_64.rpm kernel-headers-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-308.16.1.el5.x86_64.rpm kernel-xen-devel-2.6.18-308.16.1.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-2012-2319.html https://www.redhat.com/security/data/cve/CVE-2012-3412.html https://www.redhat.com/security/data/cve/CVE-2012-3430.html https://www.redhat.com/security/data/cve/CVE-2012-3510.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 2012 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFQayiUXlSAg2UNWIIRAuc/AJ96yBfuvZR3dTz6vhDOVNoj5948fACgnKRN jwgb6DDUwo+UIJjjF8oSr8U= =+ZWG - -----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 iQIVAwUBUGuEu+4yVqjM2NGpAQKhUw//fhIO2AVlypd6t3ecm4NAdcsskf3/kpji iDmcIdIsS/VQnSt2I+NH+utnPtpgYtt/14F7KE/Gtgf3+iy11vfe7MhF/6ME6D+N 9wLHpf+9UnUZvHnbdJPrBmBp/EHAOvEvUy+H2ql33QwYDGq4uo+P1GphDu6fTNx0 Iedg9wD25SJOg/oY+f04IHC3dMuLlZ5EGMIsl5odJckaPaCcEnLYRewd1h8kHhL8 3JHYj5u0ey4ItaeVA/4KNCHovrjIJkNGpDx5Mc3mqKR962Yk47Uh42YkRqPcmeg6 //evPMJdCfBjyD23ylRzyjkoPMXXMDPEwn+5IBomaLMG5w2ub2M5aLb4No+r4xjp vvRx6CZ8QFo+iIIF8qphrz3glzCpWqKV2UCTiKJIiSGLL1ZHGWGJR64VH5rIBM99 26ObLXtEUE0SPadPZukar4fRxOLHXVDE5DPP2D91gUZTu6pOea3EqDZSyQKNFcEs YO9UzeK5nT5TO/2BYsKxfunSYwnNIrqQBRXitVLcAs33kCLpM1K9FdXbfU6hehh1 oTKRwUDgTEzhFNW6gpuJAuClP919PAK3YpHdzogXi/TC0GctpMXL2JKZJUFIWYzv phimMgHNVgjtRK6QyiYm7YoQikSY6AkngNtpVvgsJjpN7bOitNoUL85vZwZZhq7p T/Y5Yj99iQE= =/T/K -----END PGP SIGNATURE-----