5.6
MEDIUM
CVE-2018-19965
Xen 64-bit PV Guest OS TLB Flushing Denial of Service
Description

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.

INFO

Published Date :

Dec. 8, 2018, 4:29 a.m.

Last Modified :

Nov. 21, 2024, 3:58 a.m.

Remotely Exploitable :

No

Impact Score :

4.0

Exploitability Score :

1.1
Public PoC/Exploit Available at Github

CVE-2018-19965 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2018-19965 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Xen xen
1 Citrix xenserver

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Architecture internals learning path from Open Security Training, provides a set of resources to complete the learning path, includes code-base, videos, techniques, useful articles and concepts to understand the courses.

c opensecurity mmu reverse-engineering rootkit-hunter rootkit-kernel tlb

C Assembly

Updated: 7 months, 2 weeks ago
1 stars 0 fork 0 watcher
Born at : Feb. 16, 2023, 3:23 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-19965 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-19965 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
    Added Reference http://www.securityfocus.com/bid/106182
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
    Added Reference https://support.citrix.com/article/CTX239432
    Added Reference https://www.debian.org/security/2019/dsa-4369
    Added Reference https://xenbits.xen.org/xsa/advisory-279.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-171 CWE-20 CWE-264 NVD-CWE-noinfo
  • CVE Modified by [email protected]

    Apr. 17, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed Reference Type https://www.debian.org/security/2019/dsa-4369 No Types Assigned https://www.debian.org/security/2019/dsa-4369 Third Party Advisory
    Changed Reference Type https://support.citrix.com/article/CTX239432 No Types Assigned https://support.citrix.com/article/CTX239432 Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.1:cu1:*:*:ltsr:*:*:* *cpe:2.3:a:citrix:xenserver:7.5:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.6:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 15, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4369 [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 10, 2019

    Action Type Old Value New Value
    Added Reference https://support.citrix.com/article/CTX239432 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 03, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:M/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
    Changed Reference Type https://xenbits.xen.org/xsa/advisory-279.html No Types Assigned https://xenbits.xen.org/xsa/advisory-279.html Mitigation, Patch, Vendor Advisory
    Changed Reference Type http://www.securityfocus.com/bid/106182 No Types Assigned http://www.securityfocus.com/bid/106182 Third Party Advisory, VDB Entry
    Added CWE CWE-171
    Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.11.1
  • CVE Modified by [email protected]

    Dec. 13, 2018

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/106182 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-19965 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-19965 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.02%

score

0.24843

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability