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Red Hat Enterprise Linux 6.7 RHSA-2018:2645-01 Important DoS Threat

An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:2645-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2645 Issue date: 2018-09-04 CVE Names: CVE-2018-5390 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux HPC Node EUS (v. 6.7) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuoustwo-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses. (CVE-2018-5390) Red Hat would like to thank Juha-Matti Tilli (Aalto University, Department of Communications and Networking and Nokia Bell Labs) for reporting this issue. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1601704 - CVE-2018-5390 kernel: TCP segments with random offsets allow a remote denial of service (SegmentSmack) 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.7): Source: kernel-2.6.32-573.62.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-573.62.1.el6.noarch.rpm kernel-doc-2.6.32-573.62.1.el6.noarch.rpm kernel-firmware-2.6.32-573.62.1.el6.noarch.rpm x86_64: kernel-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.62.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.62.1.el6.x86_64.rpm kernel-devel-2.6.32-573.62.1.el6.x86_64.rpm kernel-headers-2.6.32-573.62.1.el6.x86_64.rpm perf-2.6.32-573.62.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional EUS (v.6.7): x86_64: kernel-debug-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.62.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm python-perf-2.6.32-573.62.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v.6.7): Source: kernel-2.6.32-573.62.1.el6.src.rpm i386: kernel-2.6.32-573.62.1.el6.i686.rpm kernel-debug-2.6.32-573.62.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.62.1.el6.i686.rpm kernel-devel-2.6.32-573.62.1.el6.i686.rpm kernel-headers-2.6.32-573.62.1.el6.i686.rpm perf-2.6.32-573.62.1.el6.i686.rpm perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-573.62.1.el6.noarch.rpm kernel-doc-2.6.32-573.62.1.el6.noarch.rpm kernel-firmware-2.6.32-573.62.1.el6.noarch.rpm ppc64: kernel-2.6.32-573.62.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-573.62.1.el6.ppc64.rpm kernel-debug-2.6.32-573.62.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-573.62.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.62.1.el6.ppc64.rpm kernel-devel-2.6.32-573.62.1.el6.ppc64.rpm kernel-headers-2.6.32-573.62.1.el6.ppc64.rpm perf-2.6.32-573.62.1.el6.ppc64.rpm perf-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm s390x: kernel-2.6.32-573.62.1.el6.s390x.rpm kernel-debug-2.6.32-573.62.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.s390x.rpm kernel-debug-devel-2.6.32-573.62.1.el6.s390x.rpm kernel-debuginfo-2.6.32-573.62.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.62.1.el6.s390x.rpm kernel-devel-2.6.32-573.62.1.el6.s390x.rpm kernel-headers-2.6.32-573.62.1.el6.s390x.rpm kernel-kdump-2.6.32-573.62.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.62.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-573.62.1.el6.s390x.rpm perf-2.6.32-573.62.1.el6.s390x.rpm perf-debuginfo-2.6.32-573.62.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.s390x.rpm x86_64: kernel-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.62.1.el6.i686.rpm kernel-debug-devel-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.62.1.el6.x86_64.rpm kernel-devel-2.6.32-573.62.1.el6.x86_64.rpm kernel-headers-2.6.32-573.62.1.el6.x86_64.rpm perf-2.6.32-573.62.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v.6.7): i386: kernel-debug-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-2.6.32-573.62.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.62.1.el6.i686.rpm perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm python-perf-2.6.32-573.62.1.el6.i686.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.62.1.el6.ppc64.rpm perf-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm python-perf-2.6.32-573.62.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-573.62.1.el6.s390x.rpm kernel-debuginfo-2.6.32-573.62.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.62.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.62.1.el6.s390x.rpm perf-debuginfo-2.6.32-573.62.1.el6.s390x.rpm python-perf-2.6.32-573.62.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.62.1.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.62.1.el6.x86_64.rpm perf-debuginfo-2.6.32-573.62.1.el6.x86_64.rpm python-perf-2.6.32-573.62.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.62.1.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/ 7. References: https://access.redhat.com/security/cve/CVE-2018-5390 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/cve/cve-2018-5390 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBW46QYNzjgjWX9erEAQjG9A/+Pf4ssfX6ubcy8VIelDpxBS4/GrtLPUpy iHO1kL8HEHh/ceiSYHCldHmP3L1v49hu+8Lq7mZEIVMWUctu6EkWLo6hK1tkiUWO YVjWRTGXWIkPN7h0p0eIIYzFfWi9C321hSeu44LNNjUvdQd+3TnhOyw+WdDx54Rx QGcDkZ0MqPznonMTwBNIYeuziuVr+VDo4BxYuhmGwvLZlM4mPu7hqjTI4E5zrfp9 8Gz9/IbJAAtYlRmUHaLOpBiYiZXIenHXPtZl+BaDjvKlgnQf0mjLMITbVGKGrP86 9r0H3UMjQh15yQu5ekrV3xSzTN5LWmW/R3l84hNoSmkAfMRGylszhV4ZoDgz2253 LwGvIgiDyosDAWdQrP7+QoNJuwyzz0CR3diPSdhabwREAix6bbLxwwjA6KWkGqBo SJvbvbX0N0udO74kdRbK2aM/hBsocuDaaDfh/pbzuoC1m9mc4+/B3s0luWpFMuHV TFsdRT53Rh6FT/taJdYNe6B0JgfhFcORCBFFVCbyZwQkelZhlW4XGJxzE0utIaT3 1J4IMW3ae52BoIPpGETJ/kRp19PKqEPRKgDr/JHrt0eqAXyZQDqXRq/ZXBCjXtM0 kmipmgmn2MUMENDfyerRBvGkdO972IsV1OxIArLlgdSMS/KgMkGm2bAIks8quSJb zomr/hZ/qUU=oo3a -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Red Hat has issued a security advisory regarding an essential kernel update which rectifies a significant vulnerability that could result in potential Denial of Service (DoS) attacks.. Kernel Security, Red Hat Update, Denial of Service Fix, Security Patch. . Severity: Important. LinuxSecurity.com Team

Sep 04, 2018 •Important Red Hat