csaf_redhat - rhsa-2015

rhsa-2015_0867

Vulnerability from csaf_redhat

Published

2015-04-21 18:00

Modified

2024-11-14 16:31

Summary

Red Hat Security Advisory: qemu-kvm security and bug fix update

Notes

Topic

An updated qemu-kvm package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Details

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. It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM- allocated buffer boundaries in the host's QEMU process address space with attacker-provided data. (CVE-2014-8106) This issue was found by Paolo Bonzini of Red Hat. This update also fixes the following bug: * Previously, the effective downtime during the last phase of a live migration would sometimes be much higher than the maximum downtime specified by 'migration_downtime' in vdsm.conf. This problem has been corrected. The value of 'migration_downtime' is now honored and the migration is aborted if the downtime cannot be achieved. (BZ#1142756) 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.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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        "text": "An updated qemu-kvm package that fixes one security issue and one bug is\nnow available for Red Hat Enterprise Linux 6.\n\nRed Hat Product Security has rated this update as having Important security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
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            "6Server-6.6.z:qemu-kvm-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Server-6.6.z:qemu-kvm-debuginfo-2:0.12.1.2-2.448.el6_6.2.i686",
            "6Server-6.6.z:qemu-kvm-debuginfo-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Server-6.6.z:qemu-kvm-tools-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Workstation-6.6.z:qemu-guest-agent-2:0.12.1.2-2.448.el6_6.2.i686",
            "6Workstation-6.6.z:qemu-guest-agent-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Workstation-6.6.z:qemu-img-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Workstation-6.6.z:qemu-kvm-2:0.12.1.2-2.448.el6_6.2.src",
            "6Workstation-6.6.z:qemu-kvm-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Workstation-6.6.z:qemu-kvm-debuginfo-2:0.12.1.2-2.448.el6_6.2.i686",
            "6Workstation-6.6.z:qemu-kvm-debuginfo-2:0.12.1.2-2.448.el6_6.2.x86_64",
            "6Workstation-6.6.z:qemu-kvm-tools-2:0.12.1.2-2.448.el6_6.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "qemu: cirrus: insufficient blit region checks"
    }
  ]
}

cve-2014-8106

Vulnerability from cvelistv5

Published

2014-12-08 16:00

Modified

2024-08-06 13:10

Severity ?

Summary

Heap-based buffer overflow in the Cirrus VGA emulator (hw/display/cirrus_vga.c) in QEMU before 2.2.0 allows local guest users to execute arbitrary code via vectors related to blit regions. NOTE: this vulnerability exists because an incomplete fix for CVE-2007-1320.

References

▼	URL	Tags
	http://www.openwall.com/lists/oss-security/2014/12/04/8	mailing-list, x_refsource_MLIST
	http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=bf25983345ca44aec3dd92c57142be45452bd38a	x_refsource_CONFIRM
	http://rhn.redhat.com/errata/RHSA-2015-0795.html	vendor-advisory, x_refsource_REDHAT
	http://rhn.redhat.com/errata/RHSA-2015-0624.html	vendor-advisory, x_refsource_REDHAT
	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154656.html	vendor-advisory, x_refsource_FEDORA
	http://rhn.redhat.com/errata/RHSA-2015-0891.html	vendor-advisory, x_refsource_REDHAT
	http://www.securityfocus.com/bid/71477	vdb-entry, x_refsource_BID
	http://rhn.redhat.com/errata/RHSA-2015-0643.html	vendor-advisory, x_refsource_REDHAT
	https://exchange.xforce.ibmcloud.com/vulnerabilities/99126	vdb-entry, x_refsource_XF
	http://secunia.com/advisories/60364	third-party-advisory, x_refsource_SECUNIA
	http://rhn.redhat.com/errata/RHSA-2015-0349.html	vendor-advisory, x_refsource_REDHAT
	http://rhn.redhat.com/errata/RHSA-2015-0868.html	vendor-advisory, x_refsource_REDHAT
	http://lists.gnu.org/archive/html/qemu-devel/2014-12/msg00508.html	mailing-list, x_refsource_MLIST
	http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d3532a0db02296e687711b8cdc7791924efccea0	x_refsource_CONFIRM
	http://www.debian.org/security/2014/dsa-3088	vendor-advisory, x_refsource_DEBIAN
	http://support.citrix.com/article/CTX200892	x_refsource_CONFIRM
	http://www.debian.org/security/2014/dsa-3087	vendor-advisory, x_refsource_DEBIAN
	http://rhn.redhat.com/errata/RHSA-2015-0867.html	vendor-advisory, x_refsource_REDHAT

Impacted products

Vendor

Product

Version

▼

n/a

Version: n/a

Show details on NVD website

JSON

To clipboard

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              "x_transferred"
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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