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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2028 Important: kernel security update 12 July 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-3639 CVE-2017-14106 Reference: ASB-2018.0121 ESB-2018.2007 ESB-2018.1863 ESB-2018.1575 Original Bulletin: https://access.redhat.com/errata/RHSA-2018:2172 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:2172-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2172 Issue date: 2018-07-11 CVE Names: CVE-2017-14106 CVE-2018-3639 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 5 Extended Lifecycle 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 Server (v. 5 ELS) - i386, noarch, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639) * kernel: A divide-by-zero vulnerability was found in the __tcp_select_window function in the Linux kernel. This can result in a kernel panic causing a local denial of service. (CVE-2017-14106) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting CVE-2018-3639. 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/): 1487295 - CVE-2017-14106 kernel: Divide-by-zero in __tcp_select_window 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux Server (v. 5 ELS): Source: kernel-2.6.18-433.el5.src.rpm i386: kernel-2.6.18-433.el5.i686.rpm kernel-PAE-2.6.18-433.el5.i686.rpm kernel-PAE-debuginfo-2.6.18-433.el5.i686.rpm kernel-PAE-devel-2.6.18-433.el5.i686.rpm kernel-debug-2.6.18-433.el5.i686.rpm kernel-debug-debuginfo-2.6.18-433.el5.i686.rpm kernel-debug-devel-2.6.18-433.el5.i686.rpm kernel-debuginfo-2.6.18-433.el5.i686.rpm kernel-debuginfo-common-2.6.18-433.el5.i686.rpm kernel-devel-2.6.18-433.el5.i686.rpm kernel-headers-2.6.18-433.el5.i386.rpm kernel-xen-2.6.18-433.el5.i686.rpm kernel-xen-debuginfo-2.6.18-433.el5.i686.rpm kernel-xen-devel-2.6.18-433.el5.i686.rpm noarch: kernel-doc-2.6.18-433.el5.noarch.rpm s390x: kernel-2.6.18-433.el5.s390x.rpm kernel-debug-2.6.18-433.el5.s390x.rpm kernel-debug-debuginfo-2.6.18-433.el5.s390x.rpm kernel-debug-devel-2.6.18-433.el5.s390x.rpm kernel-debuginfo-2.6.18-433.el5.s390x.rpm kernel-debuginfo-common-2.6.18-433.el5.s390x.rpm kernel-devel-2.6.18-433.el5.s390x.rpm kernel-headers-2.6.18-433.el5.s390x.rpm kernel-kdump-2.6.18-433.el5.s390x.rpm kernel-kdump-debuginfo-2.6.18-433.el5.s390x.rpm kernel-kdump-devel-2.6.18-433.el5.s390x.rpm x86_64: kernel-2.6.18-433.el5.x86_64.rpm kernel-debug-2.6.18-433.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-433.el5.x86_64.rpm kernel-debug-devel-2.6.18-433.el5.x86_64.rpm kernel-debuginfo-2.6.18-433.el5.x86_64.rpm kernel-debuginfo-common-2.6.18-433.el5.x86_64.rpm kernel-devel-2.6.18-433.el5.x86_64.rpm kernel-headers-2.6.18-433.el5.x86_64.rpm kernel-xen-2.6.18-433.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-433.el5.x86_64.rpm kernel-xen-devel-2.6.18-433.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/ 7. References: https://access.redhat.com/security/cve/CVE-2017-14106 https://access.redhat.com/security/cve/CVE-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBW0Yk2NzjgjWX9erEAQhhYA//TD/ttx+njGVY+62U6ecXuKFmjqrh20zQ JCrNvDb96u/cXNAcwQXAgTWpgDicRjT4ZPKG/a2y4QY17kce7DWRDVpmnkbSt3AA 9LkGsHUQ+h0w1mjEcX1XiI9xOURSV4i7QeScz0ay7QhrlOW6vIYq/w9pMgv/hk3K Z9xRZ0f2OwF+EGN2DiGtbYdYt394Nqo3L9UZZoH+ZZGwqt237vNojWr3BQx/LnrU yfEthT/hmPxlirj6cCBe+T3gzhs7aapQFH+OedwBT86gPqfPcH5hjz2cJoNhAPeI efVyENShjgSAHIjftwuRDVF6Vw8bOkWHW6GZFO0sb4TdeYn6x0dydQEWfE7TBINX mAFUjNsWnCSvl77ZjlANSUREiQOBKWAed225CY+5L3XAX75g2F1u+2zm66OL6DoS OLLapjTluygw97v3691TZVsTgEIHpKv1xUr0mYw8evAr1H8uzGW/hlqzGxhj4/fO YftB1D2LD0hB8jF9aEi9Lm5IvHD3OvCaqpzKBpDaZyp9NwolBMyRyHGw+IrNG4th kLoQnESgSrzpNGdCBItPTV/e++yttvx6Ynky0NaP1HOwtCNuHrnxQBRWQVJjwWUr U686nAZMuoTwzXMd2ug633X32crMCGGn7fh7Nxxw67JyhDc+t4Rz6GnC9DWJPGGB dBIDt4/06hM= =RwOj - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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