CVE-2014-7156

LOW
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Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

References

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html

http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html

http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html

http://secunia.com/advisories/61500

http://secunia.com/advisories/61858

http://secunia.com/advisories/61890

http://security.gentoo.org/glsa/glsa-201412-42.xml

http://support.citrix.com/article/CTX200218

http://www.debian.org/security/2014/dsa-3041

http://www.securityfocus.com/bid/70062

http://www.securitytracker.com/id/1030889

http://xenbits.xen.org/xsa/advisory-106.html

Details

Source: MITRE

Published: 2014-10-02

Updated: 2018-10-30

Type: CWE-264

Risk Information

CVSS v2

Base Score: 3.3

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

Impact Score: 2.9

Exploitability Score: 6.5

Severity: LOW

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
84140OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom)NessusOracleVM Local Security Checks
low
83659SUSE SLES11 Security Update : xen (SUSE-SU-2014:1732-1)NessusSuSE Local Security Checks
high
83654SUSE SLES11 Security Update : xen (SUSE-SU-2014:1710-1)NessusSuSE Local Security Checks
high
80263GLSA-201412-42 : Xen: Denial of ServiceNessusGentoo Local Security Checks
high
79542OracleVM 3.2 : xen (OVMSA-2014-0026)NessusOracleVM Local Security Checks
high
79541OracleVM 3.3 : xen (OVMSA-2014-0025)NessusOracleVM Local Security Checks
high
78652SuSE 11.3 Security Update : Xen (SAT Patch Number 9828)NessusSuSE Local Security Checks
high
78376Fedora 20 : xen-4.3.3-3.fc20 (2014-12036)NessusFedora Local Security Checks
high
78375Fedora 19 : xen-4.2.5-3.fc19 (2014-12000)NessusFedora Local Security Checks
high
78117openSUSE Security Update : xen (openSUSE-SU-2014:1281-1)NessusSuSE Local Security Checks
high
78116openSUSE Security Update : xen (openSUSE-SU-2014:1279-1)NessusSuSE Local Security Checks
high
78027Debian DSA-3041-1 : xen - security updateNessusDebian Local Security Checks
high
77933Fedora 21 : xen-4.4.1-4.fc21 (2014-11271)NessusFedora Local Security Checks
medium