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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0077 Important: ovirt-guest-agent-docker security and bug fix update 8 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ovirt-guest-agent-docker Publisher: Red Hat Operating System: Red Hat Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-5715 Reference: ASB-2018.0002.4 ESB-2018.0065 ESB-2018.0064 ESB-2018.0046 ESB-2018.0044 ESB-2018.0042 Original Bulletin: https://access.redhat.com/errata/RHSA-2018:0049 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: ovirt-guest-agent-docker security and bug fix update Advisory ID: RHSA-2018:0049-01 Product: Red Hat Virtualization Advisory URL: https://access.redhat.com/errata/RHSA-2018:0049 Issue date: 2018-01-05 ===================================================================== 1. Summary: An update for ovirt-guest-agent-docker is now available for RHEV 4.X, RHEV-H, and Agents for Red Hat Enterprise Linux 7. 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. Description: The ovirt-guest-agent-docker package provides the guest agent for Red Hat Linux Atomic Host virtual machines. The guest agent allows the Red Hat Virtualization Manager to receive internal guest events and retrieve information such as the IP address and the list of installed applications from the guest. Additionally the guest agent allows the Manager to execute specific commands, such as shut down or reboot, on guest virtual machines. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation 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 cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the ovirt-guest-agent-docker side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. Bug Fix(es): * Previously, during Atomic host shutdown, the container was killed before the Guest Agent had a chance to send 'session-shutdown' message to VDSM host. This is now fixed. (BZ#1427849) 3. 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 4. Bugs fixed (https://bugzilla.redhat.com/): 1427849 - [atomic] The engine starts HA VM if the VM powered off from the guest OS 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 1524695 - [Rebase] Rebuild of the ovirt-guest-agent container on top of latest RHEL 7.4 5. References: https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/solutions/3307851 https://access.redhat.com/security/cve/CVE-2017-5715 6. 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 iD8DBQFaT6cTXlSAg2UNWIIRAuYiAJsFpuNx9cCPpjV9+aUOUInzDZ5KsQCfd9SO Md6wgSK+oiI41bw2vpcJKC0= =dEqQ - -----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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWlK1+4x+lLeg9Ub1AQgH6w/+IFQb0QXkbvoli8wct7bOFR9XGpQKszfb 6FSiwApCb76HV3xUUA4a3NhZYwY2YCvjbPwoUmsc9Pzn7AyiW4PUVpcyC4QlG2n3 iqxBgAFYOnwAAzgWIXN3CEtKsMD/L0JMBPMQ0TfNUCoC2XP1a3GuL6TmDs2zL+Ib yhwwlhvP2QEQJdZsCx1SsG17q+PsI2P0iq18HbJqzVEXk5mW1JnO7kQ5+rbLllZp oCuTJ6/6opHqN1xmTkazElkUw44hEIf98bLfkdlsgFmApjkC3I2sAJPTetD0SuuN oCk5NAffbQiUL+OLnIp/G4mxhZIDVeAB+levuDEiBjD2FXf2DgVuX7u2kF9IFIk7 58RmMMUYYPu5Vlt8KvlWHiDA8FrFCEV5GhJEQttMd2WSniWs2qgJYaZ4M84kYkgJ mRSIrrFnqwCeiaukSYnR9CoRMwHoJrbj19V/fwRgNlfemXaBwrXNjNMCkRHxIL/a 21uIp7fj/TLOVcFuhdSgvzyu4LRYi7NAAYkOvz8tdZ4bIoFCUAsvaWqtTrgQBJ/f LBhq4IMhb+09GMUntwhJALa7fz3Ob/lZPJbpGy4vGiYC76A+nXCT0Lee1bi84XvP tUpSUYx9MTMO9CU6E2w7uwS63/KTy48mEt0TUFp8Rbulzpm35UTKYICWuai3GcLO 9x0FCxcB6fU= =uYkW -----END PGP SIGNATURE-----