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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2293 Important: redhat-virtualization-host security update 26 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: redhat-virtualization-host Publisher: Red Hat Operating System: Red Hat Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-11479 CVE-2019-11478 CVE-2019-11477 Reference: ESB-2019.2285 ESB-2019.2256 ESB-2019.2231 ESB-2019.2183 ESB-2019.2185.2 Original Bulletin: https://access.redhat.com/errata/RHSA-2019:1594 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: redhat-virtualization-host security update Advisory ID: RHSA-2019:1594-01 Product: Red Hat Virtualization Advisory URL: https://access.redhat.com/errata/RHSA-2019:1594 Issue date: 2019-06-25 CVE Names: CVE-2019-11477 CVE-2019-11478 CVE-2019-11479 ===================================================================== 1. Summary: An update for redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this updated 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: RHEL 7-based RHEV-H for RHEV 4.2 (build requirements) - noarch, x86_64 Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS - noarch, x86_64 3. Description: The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Security Fix(es): * Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service (CVE-2019-11477) * Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478) * kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479) For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, and other related information, refer to the CVE page(s) listed in the References section. 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/2974891 5. Bugs fixed (https://bugzilla.redhat.com/): 1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service 1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service 1719129 - CVE-2019-11479 kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service 1721369 - RHV-H 4.2 rebase on RHEL 7.6 async 6. Package List: Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS: Source: redhat-release-virtualization-host-4.2-11.1.el7.src.rpm redhat-virtualization-host-4.2-20190618.0.el7_6.src.rpm noarch: redhat-virtualization-host-image-update-4.2-20190618.0.el7_6.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.2-11.1.el7.noarch.rpm x86_64: redhat-release-virtualization-host-4.2-11.1.el7.x86_64.rpm redhat-release-virtualization-host-content-4.2-11.1.el7.x86_64.rpm RHEL 7-based RHEV-H for RHEV 4.2 (build requirements): Source: redhat-release-virtualization-host-4.2-11.1.el7.src.rpm noarch: redhat-virtualization-host-image-update-placeholder-4.2-11.1.el7.noarch.rpm x86_64: redhat-release-virtualization-host-4.2-11.1.el7.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-2019-11477 https://access.redhat.com/security/cve/CVE-2019-11478 https://access.redhat.com/security/cve/CVE-2019-11479 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 2019 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXRHnR9zjgjWX9erEAQjDfg/+NTduLKmQJI8RZKfAzAA3EIhtVuZAcGHK zfr59m9pLAo0/KKHcXEiVG1I5gy1VAQj4H9HH5qm+mPx30fh0RzQ9t3p8S5s3l1T TsXxZdJTUbThkBiJ577A/SMQfETJtMt+SaT849uhVDH1ane6AeGpeuwKKqwEaz7B 91DMSWbKW7M7TzcwDv9kB5UQb98CqKDfP7k2/kWqhWAss/ihGlo642r7j/l1tXF8 pWUH/g/BufL0Rk0n1QJjQKHHD6eoSetE/XFSR8+8uBGnZm1+9eCo/bbTe9DuMSON UaU/xsxJOisW9XH4mR4ZEUxjJBxtT7UzH18KUuLZQEI5YII15J/M2h5+9fy/kYXj MmOosgPvEbaGyPfn2aqQAI7/Yd8enOsWS8eZ0l8gaeRpSyqhCBxqcIoiYJcVOAv0 YC4JKXszSmqK1TnljXVFLkoV9Hp/qRkMyPLB/z9hHi+dEV/WQx3SiRPQZ5vs2y6g sAV7betwCCCW8icj5GPR3+jzWTP3VlFDzwxlTF7tHnnHy0kBgsrATghZaJ0ZLfTN vXGzItIfKwjl8NskNf/dNuPt+dNWnsZ8lOamtlWrV2x1Y/WCMQ3sl2JGDS9epz4F R2tZSqFogN9hBNGD/rh42aPO4oMiElppXTz2tySwhiucWk0b8upu2HDhEz90q/dn s0ICwJBdD34= =BAEJ - -----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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