CVE-2020-27674
Xen X86 Privilege Escalation Vulnerability
Description
An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.
INFO
Published Date :
Oct. 22, 2020, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 5:21 a.m.
Source :
cve@mitre.org
Remotely Exploitable :
No
Impact Score :
3.4
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2020-27674
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.
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-2020-27674.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-27674 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-27674 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://www.openwall.com/lists/oss-security/2021/01/19/5 Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ Added Reference https://security.gentoo.org/glsa/202011-06 Added Reference https://www.debian.org/security/2020/dsa-4804 Added Reference https://xenbits.xen.org/xsa/advisory-286.html -
CVE Modified by cve@mitre.org
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by cve@mitre.org
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ -
Modified Analysis by nvd@nist.gov
Apr. 26, 2022
Action Type Old Value New Value Changed Reference Type http://www.openwall.com/lists/oss-security/2021/01/19/5 No Types Assigned http://www.openwall.com/lists/oss-security/2021/01/19/5 Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202011-06 No Types Assigned https://security.gentoo.org/glsa/202011-06 Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4804 No Types Assigned https://www.debian.org/security/2020/dsa-4804 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CWE Remap by nvd@nist.gov
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-119 CWE-787 -
CVE Modified by cve@mitre.org
Jan. 19, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/01/19/5 [No Types Assigned] -
CVE Modified by cve@mitre.org
Dec. 05, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4804 [No Types Assigned] -
CVE Modified by cve@mitre.org
Nov. 20, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ [No Types Assigned] -
CVE Modified by cve@mitre.org
Nov. 12, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ [No Types Assigned] -
CVE Modified by cve@mitre.org
Nov. 11, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202011-06 [No Types Assigned] -
Reanalysis by nvd@nist.gov
Nov. 09, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P) Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L -
Initial Analysis by nvd@nist.gov
Nov. 03, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://xenbits.xen.org/xsa/advisory-286.html No Types Assigned https://xenbits.xen.org/xsa/advisory-286.html Patch, Vendor Advisory Added CWE NIST CWE-119 Added CPE Configuration OR *cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions up to (including) 4.14.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-27674 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-2020-27674
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} -0.02%
score
0.26856
percentile