NVD - CVE-2017-2618

CVE-2017-2618 Detail

Current Description

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.

Source: MITRE
Description Last Modified: 07/27/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

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

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.securityfocus.com/bid/96272	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:0931	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0932	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0933	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618	Issue Tracking Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125	Patch Vendor Advisory
https://marc.info/?l=selinux&m=148588165923772&w=2	Patch Third Party Advisory
https://www.debian.org/security/2017/dsa-3791	Third Party Advisory

Technical Details

Vulnerability Type (View All)

Incorrect Calculation (CWE-682)

Vulnerable software and versions Switch to CPE 2.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

3 change records found - show changes

Initial Analysis - 9/20/2018 2:54:33 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 660 characters. View Entire Change Record OR cpe:2.3:o:debian:debian_linux:8.0::::::: cpe:2.3:o:redhat:enterprise_linux:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_desktop:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_server:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3::::::: cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4::::::: cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3::::::: *cpe:2.3:o:redhat:enterprise_linux_server_
Added	CPE Configuration		OR cpe:2.3:o:linux:linux_kernel::::::::* versions up to (excluding) 4.9.10
Added	CVSS V2		(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3		AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		CWE-682
Changed	Reference Type	http://www.securityfocus.com/bid/96272 No Types Assigned	http://www.securityfocus.com/bid/96272 Third Party Advisory, VDB Entry
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2017:0931 No Types Assigned	https://access.redhat.com/errata/RHSA-2017:0931 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2017:0932 No Types Assigned	https://access.redhat.com/errata/RHSA-2017:0932 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2017:0933 No Types Assigned	https://access.redhat.com/errata/RHSA-2017:0933 Third Party Advisory
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125 No Types Assigned	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125 Patch, Vendor Advisory
Changed	Reference Type	https://marc.info/?l=selinux&m=148588165923772&w=2 No Types Assigned	https://marc.info/?l=selinux&m=148588165923772&w=2 Patch, Third Party Advisory
Changed	Reference Type	https://www.debian.org/security/2017/dsa-3791 No Types Assigned	https://www.debian.org/security/2017/dsa-3791 Third Party Advisory

CVE Modified by MITRE - 7/28/2018 9:29:02 PM

Action	Type	New Value
Added	Reference	http://www.securityfocus.com/bid/96272 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2017:0931 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2017:0932 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2017:0933 [No Types Assigned]
Added	Reference	https://www.debian.org/security/2017/dsa-3791 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2017-2618
NVD Published Date:
07/27/2018
NVD Last Modified:
09/20/2018

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