CVE-2018-14678

An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://xenbits.xen.org/xsa/advisory-274.html	Mitigation Patch Vendor Advisory
http://www.securitytracker.com/id/1041397	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/104924	Third Party Advisory VDB Entry
https://www.debian.org/security/2018/dsa-4308	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/3931-2/
https://usn.ubuntu.com/3931-1/

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*

Information

Published : 2018-07-28 18:29

Updated : 2019-10-03 00:03

NVD link : CVE-2018-14678

Mitre link : CVE-2018-14678

JSON object : View

Products Affected

linux

linux_kernel

debian

debian_linux

xen

xen

CWE

CWE-665

Improper Initialization

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