Detections
Analytics
RHEL 6 : qemu-kvm (RHSA-2015:0998)
critical Nessus Plugin ID 83425
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Synopsis
The remote Red Hat host is missing a security update for qemu-kvm.Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:0998 advisory.KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM.
An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest.
(CVE-2015-3456)
Red Hat would like to thank Jason Geffner of CrowdStrike for reporting this issue.
All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL qemu-kvm package based on the guidance in RHSA-2015:0998.See Also
http://www.nessus.org/u?306ec18a
https://access.redhat.com/errata/RHSA-2015:0998
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: Critical
ID: 83425
File Name: redhat-RHSA-2015-0998.nasl
Version: 2.21
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/13/2015
Updated: 11/4/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.1
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.7
Temporal Score: 6.4
Vector: CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2015-3456
CVSS v3
Risk Factor: Critical
Base Score: 10
Temporal Score: 9.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:qemu-guest-agent, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:qemu-img, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools, p-cpe:/a:redhat:enterprise_linux:qemu-kvm
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/13/2015
Vulnerability Publication Date: 5/13/2015
Exploitable With
Core Impact
Reference Information
CVE: CVE-2015-3456