CVE-2017-14318

Upstream information

CVE-2017-14318 at MITRE

Description

An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct.

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SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores

	National Vulnerability Database	SUSE
Base Score	4.9	6
Vector	AV:L/AC:L/Au:N/C:N/I:N/A:C	AV:L/AC:H/Au:S/C:C/I:C/A:C
Access Vector	Local	Local
Access Complexity	Low	High
Authentication	None	Single
Confidentiality Impact	None	Complete
Integrity Impact	None	Complete
Availability Impact	Complete	Complete

CVSS v3 Scores

	National Vulnerability Database	SUSE
Base Score	6.5	7.8
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Access Vector	Local	Local
Access Complexity	Low	High
Privileges Required	Low	Low
User Interaction	None	None
Scope	Changed	Changed
Confidentiality Impact	None	High
Integrity Impact	None	High
Availability Impact	High	High
CVSSv3 Version	3	3

SUSE Bugzilla entry: 1056280 [RESOLVED / FIXED]

SUSE Security Advisories:

• SUSE-SU-2017:2420-1, published Tue, 12 Sep 2017 21:08:00 +0200 (CEST)
• SUSE-SU-2017:2466-1, published Thu Sep 14 13:08:28 MDT 2017
• SUSE-SU-2017:2519-1, published Mon, 18 Sep 2017 15:09:09 +0200 (CEST)
• openSUSE-SU-2017:2514-1, published Mon, 18 Sep 2017 00:10:01 +0200 (CEST)
• openSUSE-SU-2017:2540-1, published Thu, 21 Sep 2017 12:08:39 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Linux Enterprise Desktop 12 SP2	xen >= 4.7.3_04-43.12.1 xen-libs >= 4.7.3_04-43.12.1 xen-libs-32bit >= 4.7.3_04-43.12.1	Patchnames: SUSE-SLE-DESKTOP-12-SP2-2017-1558
SUSE Linux Enterprise Desktop 12 SP3	xen >= 4.9.0_12-3.15.1 xen-libs >= 4.9.0_12-3.15.1 xen-libs-32bit >= 4.9.0_12-3.15.1	Patchnames: SUSE-SLE-DESKTOP-12-SP3-2017-1500
SUSE Linux Enterprise Desktop 12 SP4	xen >= 4.11.0_08-1.11 xen-libs >= 4.11.0_08-1.11 xen-libs-32bit >= 4.11.0_08-1.11
SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Server 12 SP5	xen >= 4.12.1_06-1.1 xen-doc-html >= 4.12.1_06-1.1 xen-libs >= 4.12.1_06-1.1 xen-libs-32bit >= 4.12.1_06-1.1 xen-tools >= 4.12.1_06-1.1 xen-tools-domU >= 4.12.1_06-1.1
SUSE Linux Enterprise Server 12 SP1-LTSS	xen >= 4.5.5_16-22.28.1 xen-doc-html >= 4.5.5_16-22.28.1 xen-kmp-default >= 4.5.5_16_k3.12.74_60.64.57-22.28.1 xen-libs >= 4.5.5_16-22.28.1 xen-libs-32bit >= 4.5.5_16-22.28.1 xen-tools >= 4.5.5_16-22.28.1 xen-tools-domU >= 4.5.5_16-22.28.1	Patchnames: SUSE-SLE-SERVER-12-SP1-2017-1533
SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP2	xen >= 4.7.3_04-43.12.1 xen-doc-html >= 4.7.3_04-43.12.1 xen-libs >= 4.7.3_04-43.12.1 xen-libs-32bit >= 4.7.3_04-43.12.1 xen-tools >= 4.7.3_04-43.12.1 xen-tools-domU >= 4.7.3_04-43.12.1	Patchnames: SUSE-SLE-SERVER-12-SP2-2017-1558
SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen >= 4.9.0_12-3.15.1 xen-doc-html >= 4.9.0_12-3.15.1 xen-libs >= 4.9.0_12-3.15.1 xen-libs-32bit >= 4.9.0_12-3.15.1 xen-tools >= 4.9.0_12-3.15.1 xen-tools-domU >= 4.9.0_12-3.15.1	Patchnames: SUSE-SLE-SERVER-12-SP3-2017-1500
SUSE Linux Enterprise Server 12 SP4	xen >= 4.11.0_08-1.11 xen-doc-html >= 4.11.0_08-1.11 xen-libs >= 4.11.0_08-1.11 xen-libs-32bit >= 4.11.0_08-1.11 xen-tools >= 4.11.0_08-1.11 xen-tools-domU >= 4.11.0_08-1.11
SUSE Linux Enterprise Server for SAP Applications 12 SP1	xen >= 4.5.5_16-22.28.1 xen-doc-html >= 4.5.5_16-22.28.1 xen-kmp-default >= 4.5.5_16_k3.12.74_60.64.57-22.28.1 xen-libs >= 4.5.5_16-22.28.1 xen-libs-32bit >= 4.5.5_16-22.28.1 xen-tools >= 4.5.5_16-22.28.1 xen-tools-domU >= 4.5.5_16-22.28.1	Patchnames: SUSE-SLE-SAP-12-SP1-2017-1533
SUSE Linux Enterprise Software Development Kit 12 SP2	xen-devel >= 4.7.3_04-43.12.1	Patchnames: SUSE-SLE-SDK-12-SP2-2017-1558
SUSE Linux Enterprise Software Development Kit 12 SP3	xen-devel >= 4.9.0_12-3.15.1	Patchnames: SUSE-SLE-SDK-12-SP3-2017-1500
SUSE Linux Enterprise Software Development Kit 12 SP4	xen-devel >= 4.11.0_08-1.11
SUSE Linux Enterprise Software Development Kit 12 SP5	xen-devel >= 4.12.1_06-1.1
SUSE OpenStack Cloud 6	xen >= 4.5.5_16-22.28.1 xen-doc-html >= 4.5.5_16-22.28.1 xen-kmp-default >= 4.5.5_16_k3.12.74_60.64.57-22.28.1 xen-libs >= 4.5.5_16-22.28.1 xen-libs-32bit >= 4.5.5_16-22.28.1 xen-tools >= 4.5.5_16-22.28.1 xen-tools-domU >= 4.5.5_16-22.28.1	Patchnames: SUSE-OpenStack-Cloud-6-2017-1533

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Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s)	Source package	State
HPE Helion OpenStack 8	xen	In progress
SUSE Container as a Service Platform 1.0	xen	Affected
SUSE Container as a Service Platform 2.0	xen	Already fixed
SUSE Linux Enterprise Desktop 12 SP2	xen	Released
SUSE Linux Enterprise Desktop 12 SP3	xen	Already fixed
SUSE Linux Enterprise High Performance Computing 15 LTSS	xen	Already fixed
SUSE Linux Enterprise Server 11 SP3 LTSS	xen	Not affected
SUSE Linux Enterprise Server 11 SP4	xen	Not affected
SUSE Linux Enterprise Server 12 LTSS	xen	Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP2	xen	Released
SUSE Linux Enterprise Server 12 SP2 BCL	xen	In progress
SUSE Linux Enterprise Server 12 SP3	xen	Already fixed
SUSE Linux Enterprise Server 12 SP3 BCL	xen	In progress
SUSE Linux Enterprise Server 12 SP3 ESPOS	xen	In progress
SUSE Linux Enterprise Server 12 SP3 LTSS	xen	In progress
SUSE Linux Enterprise Server 12 SP4 ESPOS	xen	Already fixed
SUSE Linux Enterprise Server 12 SP4 LTSS	xen	Already fixed
SUSE Linux Enterprise Server 15 ESPOS	xen	Already fixed
SUSE Linux Enterprise Server 15 LTSS	xen	Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen	In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP4	xen	Already fixed
SUSE Linux Enterprise Server for SAP Applications 15	xen	Already fixed
SUSE Linux Enterprise Software Development Kit 11 SP4	xen	Not affected
SUSE Linux Enterprise Software Development Kit 12 SP2	xen	Released
SUSE Linux Enterprise Software Development Kit 12 SP3	xen	Already fixed
SUSE OpenStack Cloud 8	xen	In progress
SUSE OpenStack Cloud 9	xen	Already fixed
SUSE OpenStack Cloud Crowbar 8	xen	In progress
SUSE OpenStack Cloud Crowbar 9	xen	Already fixed