Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2014-7155

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.

Security Impact Summary

CVE-2014-7155 is a security vulnerability that . Impacting 4 products from xen, from debian, from fedoraproject and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2014, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2014-10-02T14:55:05.120

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.8 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:P/I:P/A:P

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

6.5

Impact Score

6.4

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	xen	xen	≤ 4.4.0	Yes
Operating System	xen	xen	3.0.2	Yes
Operating System	xen	xen	3.0.3	Yes
Operating System	xen	xen	3.0.4	Yes
Operating System	xen	xen	3.1.3	Yes
Operating System	xen	xen	3.1.4	Yes
Operating System	xen	xen	3.2.0	Yes
Operating System	xen	xen	3.2.1	Yes
Operating System	xen	xen	3.2.2	Yes
Operating System	xen	xen	3.2.3	Yes
Operating System	xen	xen	3.3.0	Yes
Operating System	xen	xen	3.3.1	Yes
Operating System	xen	xen	3.3.2	Yes
Operating System	xen	xen	3.4.0	Yes
Operating System	xen	xen	3.4.1	Yes
Operating System	xen	xen	3.4.2	Yes
Operating System	xen	xen	3.4.3	Yes
Operating System	xen	xen	3.4.4	Yes
Operating System	xen	xen	4.0.0	Yes
Operating System	xen	xen	4.0.1	Yes
Operating System	xen	xen	4.0.2	Yes
Operating System	xen	xen	4.0.3	Yes
Operating System	xen	xen	4.0.4	Yes
Operating System	xen	xen	4.1.0	Yes
Operating System	xen	xen	4.1.1	Yes
Operating System	xen	xen	4.1.2	Yes
Operating System	xen	xen	4.1.3	Yes
Operating System	xen	xen	4.1.4	Yes
Operating System	xen	xen	4.1.5	Yes
Operating System	xen	xen	4.1.6.1	Yes
Operating System	xen	xen	4.2.0	Yes
Operating System	xen	xen	4.2.1	Yes
Operating System	xen	xen	4.2.2	Yes
Operating System	xen	xen	4.2.3	Yes
Operating System	xen	xen	4.3.0	Yes
Operating System	xen	xen	4.3.1	Yes
Operating System	xen	xen	4.4.0	Yes
Operating System	xen	xen	4.4.0	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	fedoraproject	fedora	19	Yes
Operating System	fedoraproject	fedora	20	Yes
Operating System	opensuse	opensuse	12.3	Yes
Operating System	opensuse	opensuse	13.1	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html Third Party Advisory ([email protected])
http://secunia.com/advisories/61858 ([email protected])
http://secunia.com/advisories/61890 ([email protected])
http://security.gentoo.org/glsa/glsa-201412-42.xml ([email protected])
http://support.citrix.com/article/CTX200218 Third Party Advisory ([email protected])
http://www.debian.org/security/2014/dsa-3041 Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/70057 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1030888 Third Party Advisory, VDB Entry ([email protected])
http://xenbits.xen.org/xsa/advisory-105.html Patch, Vendor Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/61858 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/61890 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201412-42.xml (af854a3a-2127-422b-91ae-364da2661108)
http://support.citrix.com/article/CTX200218 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3041 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/70057 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1030888 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/xsa/advisory-105.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For xen's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.