UBUNTU-CVE-2017-12855

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2017-12855
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-12855.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-12855
Related
Published
2017-08-15T16:29:00Z
Modified
2017-08-15T16:29:00Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Xen maintains the GTF{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A guest is expected not to modify the grant details while it is in use, whereas the guest is free to modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may prematurely believe that a granted frame is safely private again, and reuse it in a way which contains sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9, 4.8, 4.7, 4.6, and 4.5 are affected.

References

Affected packages

Ubuntu:14.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen?arch=src?distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.2-0ubuntu0.14.04.14

Affected versions

4.*

4.3.0-1ubuntu1
4.3.0-1ubuntu2
4.3.0-1ubuntu3
4.3.0-1ubuntu4
4.3.0-1ubuntu5
4.4.0-0ubuntu3
4.4.0-0ubuntu4
4.4.0-0ubuntu5
4.4.0-0ubuntu5.1
4.4.0-0ubuntu5.2
4.4.1-0ubuntu0.14.04.1
4.4.1-0ubuntu0.14.04.2
4.4.1-0ubuntu0.14.04.3
4.4.1-0ubuntu0.14.04.4
4.4.1-0ubuntu0.14.04.5
4.4.1-0ubuntu0.14.04.6
4.4.2-0ubuntu0.14.04.1
4.4.2-0ubuntu0.14.04.2
4.4.2-0ubuntu0.14.04.3
4.4.2-0ubuntu0.14.04.4
4.4.2-0ubuntu0.14.04.5
4.4.2-0ubuntu0.14.04.6
4.4.2-0ubuntu0.14.04.7
4.4.2-0ubuntu0.14.04.9
4.4.2-0ubuntu0.14.04.10
4.4.2-0ubuntu0.14.04.11
4.4.2-0ubuntu0.14.04.12

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-4.4"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-4.4-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-dev"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-ocaml"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-ocaml-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxen-ocaml-dev"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxenstore3.0"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "libxenstore3.0-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.1-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.3-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.3-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.4-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.4-arm64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-hypervisor-4.4-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-system-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-system-arm64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-system-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-utils-4.4"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-utils-4.4-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xen-utils-common"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xenstore-utils"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.14",
            "binary_name": "xenstore-utils-dbgsym"
        }
    ]
}

Ubuntu:16.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.6.5-0ubuntu1.4

Affected versions

4.*

4.5.1-0ubuntu1
4.5.1-0ubuntu2
4.6.0-1ubuntu1
4.6.0-1ubuntu2
4.6.0-1ubuntu4
4.6.0-1ubuntu4.1
4.6.0-1ubuntu4.2
4.6.0-1ubuntu4.3
4.6.5-0ubuntu1
4.6.5-0ubuntu1.1
4.6.5-0ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "libxen-4.6"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "libxen-4.6-dbgsym"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "libxen-dev"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "libxenstore3.0"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "libxenstore3.0-dbgsym"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.4-amd64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.4-arm64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.4-armhf"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.5-amd64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.5-arm64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.5-armhf"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.6-amd64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.6-arm64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-hypervisor-4.6-armhf"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-system-amd64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-system-arm64"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-system-armhf"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-utils-4.6"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-utils-4.6-dbgsym"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xen-utils-common"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xenstore-utils"
        },
        {
            "binary_version": "4.6.5-0ubuntu1.4",
            "binary_name": "xenstore-utils-dbgsym"
        }
    ]
}