6.5
MEDIUM
CVE-2018-7540
Xen Denial of Service
Description

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

INFO

Published Date :

Feb. 27, 2018, 7:29 p.m.

Last Modified :

Nov. 13, 2018, 11:29 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

4.0

Exploitability Score :

2.0
Public PoC/Exploit Available at Github

CVE-2018-7540 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-2018-7540 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
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-7540.

URL Resource
http://www.securityfocus.com/bid/103174
http://www.securitytracker.com/id/1040773
https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
https://security.gentoo.org/glsa/201810-06
https://support.citrix.com/article/CTX232096
https://support.citrix.com/article/CTX232655
https://www.debian.org/security/2018/dsa-4131 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-252.html Vendor Advisory

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).

Profile Photo
andir/nixos-issue-db-example

None

Updated: 4 years, 9 months ago
1 stars 0 fork 0 watcher
Born at : July 17, 2018, 7:48 p.m. This repo has been linked 494 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-2018-7540 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-7540 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 [email protected]

    May. 14, 2024

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

    Nov. 13, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 31, 2018

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201810-06 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 13, 2018

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1040773 [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 05, 2018

    Action Type Old Value New Value
    Added Reference https://support.citrix.com/article/CTX232096 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 24, 2018

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/103174 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 23, 2018

    Action Type Old Value New Value
    Added Reference https://support.citrix.com/article/CTX232655 [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 16, 2018

    Action Type Old Value New Value
    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:C/C:N/I:N/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html Third Party Advisory
    Changed Reference Type https://xenbits.xen.org/xsa/advisory-252.html No Types Assigned https://xenbits.xen.org/xsa/advisory-252.html Vendor Advisory
    Changed Reference Type https://www.debian.org/security/2018/dsa-4131 No Types Assigned https://www.debian.org/security/2018/dsa-4131 Third Party Advisory
    Added CWE CWE-400
    Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to (including) 4.10.0
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 07, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 06, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4131 [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-2018-7540 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-2018-7540 weaknesses.

Exploit Prediction

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

0.06 }} 0.00%

score

0.24592

percentile

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