CVE-2021-3543
Nitro Enclaves Null Pointer Dereference Privilege Escalation Vulnerability
Description
A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.
INFO
Published Date :
June 1, 2021, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 6:21 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Affected Products
The following products are affected by CVE-2021-3543
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-2021-3543.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1953022 | Issue Tracking Third Party Advisory |
| https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1953022 | Issue Tracking Third Party Advisory |
| https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ |
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-2021-3543 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3543 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 https://bugzilla.redhat.com/show_bug.cgi?id=1953022 Added Reference https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ -
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 Red Hat, Inc. https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ [No types assigned] Removed Reference Red Hat, Inc. https://lore.kernel.org/lkml/[email protected]/ Removed CWE Red Hat, Inc. CWE-476 -
Modified Analysis by [email protected]
Jun. 03, 2022
Action Type Old Value New Value Changed Reference Type https://lore.kernel.org/lkml/[email protected]/ No Types Assigned https://lore.kernel.org/lkml/[email protected]/ Patch, Vendor Advisory Added CWE NIST CWE-476 Added CWE NIST CWE-416 -
CVE Modified by [email protected]
Apr. 01, 2022
Action Type Old Value New Value Removed Reference https://lore.kernel.org/lkml/[email protected]/ [Exploit, Third Party Advisory] Added Reference https://lore.kernel.org/lkml/[email protected]/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 11, 2021
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:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1953022 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1953022 Issue Tracking, Third Party Advisory Changed Reference Type https://lore.kernel.org/lkml/[email protected]/ No Types Assigned https://lore.kernel.org/lkml/[email protected]/ Exploit, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:nitro_enclaves_project:nitro_enclaves:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.0 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3543 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-2021-3543
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile