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.
Find out more about CVE-2017-5715 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/speculativeexecution
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 5.6 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
Attack Vector | Local |
Attack Complexity | High |
Privileges Required | Low |
User Interaction | None |
Scope | Changed |
Confidentiality | High |
Integrity Impact | None |
Availability Impact | None |
Platform | Package | State |
---|---|---|
Red Hat Virtualization 4 | rhevm-appliance | Affected |
Red Hat Virtualization 4 | ovirt-guest-agent-docker | Affected |
Red Hat Virtualization 4 | rhevm-setup-plugins | Affected |
Red Hat Virtualization 4 | vdsm | Affected |
Red Hat Virtualization 4 | rhev-hypervisor | Affected |
Red Hat OpenStack Platform 9.0 | qemu-kvm-rhev | Affected |
Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev | Affected |
Red Hat OpenStack Platform 12.0 | qemu-kvm-rhev | Affected |
Red Hat OpenStack Platform 11.0 (Ocata) | qemu-kvm-rhev | Affected |
Red Hat OpenStack Platform 10 | qemu-kvm-rhev | Affected |
Red Hat Enterprise MRG 2 | kernel-rt | Affected |
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev | Affected |
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev | Affected |
Red Hat Enterprise Linux 7 | qemu-kvm | Affected |
Red Hat Enterprise Linux 7 | linux-firmware | Affected |
Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Affected |
Red Hat Enterprise Linux 7 | kernel-rt | Affected |
Red Hat Enterprise Linux 7 | libvirt | Affected |
Red Hat Enterprise Linux 7 | kernel | Affected |
Red Hat Enterprise Linux 7 | kernel-alt | Affected |
Red Hat Enterprise Linux 7 | dracut | Affected |
Red Hat Enterprise Linux 7 | ovmf | Not affected |
Red Hat Enterprise Linux 7 | microcode_ctl | Affected |
Red Hat Enterprise Linux 7 | qemu-kvm-ma | Affected |
Red Hat Enterprise Linux 6 | libvirt | Affected |
Red Hat Enterprise Linux 6 | qemu-kvm-rhev | Affected |
Red Hat Enterprise Linux 6 | qemu-kvm | Affected |
Red Hat Enterprise Linux 6 | kernel | Affected |
Red Hat Enterprise Linux 6 | microcode_ctl | Affected |
Red Hat Enterprise Linux 5 | kernel | Affected |
Red Hat Enterprise Linux 5 | microcode_ctl | Affected |
RHEV Manager 3 | rhev-hypervisor-ng | Affected |
RHEV Manager 3 | vdsm | Affected |
RHEV Manager 3 | rhev-hypervisor | Affected |
RHEV Manager 3 | rhevm-setup-plugins | Affected |