Vulnerability CVE-2015-7814

Vulnerability Name:

CVE-2015-7814 (CCN-107666)

Assigned:

2015-10-29

Published:

2015-10-29

Updated:

2017-07-01

Summary:

Race condition in the relinquish_memory function in arch/arm/domain.c in Xen 4.6.x and earlier allows local domains with partial management control to cause a denial of service (host crash) via vectors involving the destruction of a domain and using XENMEM_decrease_reservation to reduce the memory of the domain.

CVSS v3 Severity:

4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

4.7 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-362
CWE-119

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2015-7814

Source: FEDORA
Type: UNKNOWN
FEDORA-2015-a931b02be2

Source: FEDORA
Type: UNKNOWN
FEDORA-2015-6f6b79efe2

Source: FEDORA
Type: UNKNOWN
FEDORA-2015-242be2c240

Source: DEBIAN
Type: UNKNOWN
DSA-3414

Source: SECTRACK
Type: UNKNOWN
1034030

Source: CCN
Type: Xen Security Advisory XSA-147
arm: Race between domain destruction and memory allocation decrease

Source: CONFIRM
Type: Vendor Advisory
http://xenbits.xen.org/xsa/advisory-147.html

Source: XF
Type: UNKNOWN
xen-cve20157814-dos(107666)

Source: GENTOO
Type: UNKNOWN
GLSA-201604-03

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2015-7814

Vulnerable Configuration:

Configuration 1:

cpe:/o:xen:xen:*:*:*:*:*:*:*:* (Version <= 4.6.0)

Configuration CCN 1:

cpe:/a:xensource:xen:4.4:*:*:*:*:*:*:*

OR cpe:/a:xensource:xen:4.5:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.cisecurity:def:336	P	DSA-3414-1 -- xen -- security update	2016-02-19
oval:com.ubuntu.precise:def:20157814000	V	CVE-2015-7814 on Ubuntu 12.04 LTS (precise) - medium.	2015-10-30
oval:com.ubuntu.trusty:def:20157814000	V	CVE-2015-7814 on Ubuntu 14.04 LTS (trusty) - medium.	2015-10-30

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