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CVE-2018-14678

Good to know:

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Date: July 28, 2018

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.

Language: C

Severity Score

Related Resources (12)

https://security-tracker.debian.org/tracker/CVE-2018-14678
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
http://www.securitytracker.com/id/1041397
https://usn.ubuntu.com/3931-2/
https://www.debian.org/security/2018/dsa-4308
https://usn.ubuntu.com/3931-1/
https://access.redhat.com/security/cve/CVE-2018-14678
https://xenbits.xen.org/xsa/advisory-274.html
http://www.securityfocus.com/bid/104924
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-14678
https://nvd.nist.gov/vuln/detail/CVE-2018-14678
https://www.mend.io/vulnerability-database/CVE-2018-14678

Severity Score

Weakness Type (CWE)

Improper Initialization

CWE-665

Permissions, Privileges, and Access Control

CWE-264

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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