CVE-2014-7155
Summary
| CVE | CVE-2014-7155 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2014-10-02 14:55:05 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
AdjacentAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:A/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Debian | Debian Linux | 7.0 | All | All | All |
| Operating System | Fedoraproject | Fedora | 19 | All | All | All |
| Operating System | Fedoraproject | Fedora | 20 | All | All | All |
| Operating System | Opensuse | Opensuse | 12.3 | All | All | All |
| Operating System | Opensuse | Opensuse | 13.1 | All | All | All |
| Operating System | Xen | Xen | 3.0.2 | All | All | All |
| Operating System | Xen | Xen | 3.0.3 | All | All | All |
| Operating System | Xen | Xen | 3.0.4 | All | All | All |
| Operating System | Xen | Xen | 3.1.3 | All | All | All |
| Operating System | Xen | Xen | 3.1.4 | All | All | All |
| Operating System | Xen | Xen | 3.2.0 | All | All | All |
| Operating System | Xen | Xen | 3.2.1 | All | All | All |
| Operating System | Xen | Xen | 3.2.2 | All | All | All |
| Operating System | Xen | Xen | 3.2.3 | All | All | All |
| Operating System | Xen | Xen | 3.3.0 | All | All | All |
| Operating System | Xen | Xen | 3.3.1 | All | All | All |
| Operating System | Xen | Xen | 3.3.2 | All | All | All |
| Operating System | Xen | Xen | 3.4.0 | All | All | All |
| Operating System | Xen | Xen | 3.4.1 | All | All | All |
| Operating System | Xen | Xen | 3.4.2 | All | All | All |
| Operating System | Xen | Xen | 3.4.3 | All | All | All |
| Operating System | Xen | Xen | 3.4.4 | All | All | All |
| Operating System | Xen | Xen | 4.0.0 | All | All | All |
| Operating System | Xen | Xen | 4.0.1 | All | All | All |
| Operating System | Xen | Xen | 4.0.2 | All | All | All |
| Operating System | Xen | Xen | 4.0.3 | All | All | All |
| Operating System | Xen | Xen | 4.0.4 | All | All | All |
| Operating System | Xen | Xen | 4.1.0 | All | All | All |
| Operating System | Xen | Xen | 4.1.1 | All | All | All |
| Operating System | Xen | Xen | 4.1.2 | All | All | All |
| Operating System | Xen | Xen | 4.1.3 | All | All | All |
| Operating System | Xen | Xen | 4.1.4 | All | All | All |
| Operating System | Xen | Xen | 4.1.5 | All | All | All |
| Operating System | Xen | Xen | 4.1.6.1 | All | All | All |
| Operating System | Xen | Xen | 4.2.0 | All | All | All |
| Operating System | Xen | Xen | 4.2.1 | All | All | All |
| Operating System | Xen | Xen | 4.2.2 | All | All | All |
| Operating System | Xen | Xen | 4.2.3 | All | All | All |
| Operating System | Xen | Xen | 4.3.0 | All | All | All |
| Operating System | Xen | Xen | 4.3.1 | All | All | All |
| Operating System | Xen | Xen | 4.4.0 | All | All | All |
| Operating System | Xen | Xen | 4.4.0 | rc1 | All | All |
| Operating System | Xen | Xen | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [security-announce] openSUSE-SU-2014:1281-1: important: xen: security an | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Third Party Advisory |
| Xen 'x86_emulate.c' Local Privilege Escalation Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| Xen: Denial of Service (GLSA 201412-42) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Citrix XenServer Multiple Security Updates | af854a3a-2127-422b-91ae-364da2661108 | support.citrix.com | Third Party Advisory |
| [SECURITY] Fedora 20 Update: xen-4.3.3-3.fc20 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | Third Party Advisory |
| XSA-105 - Xen Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | xenbits.xen.org | Patch, Vendor Advisory |
| Debian -- Security Information -- DSA-3041-1 xen | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| Xen x86 Instruction Emulation Flaw Lets Local Guest Users Gain Elevated Privileges on the Guest System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| Security Advisory SA61890 - Gentoo update for xen - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| [security-announce] openSUSE-SU-2014:1279-1: important: xen: security an | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Third Party Advisory |
| [SECURITY] Fedora 19 Update: xen-4.2.5-3.fc19 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | Third Party Advisory |
| Security Advisory SA61858 - Citrix XenServer Multiple Vulnerabilities - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.