CVE-2021-20319
CoreOS Installer Signature Verification Bypass
Description
An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.
INFO
Published Date :
March 4, 2022, 6:15 p.m.
Last Modified :
March 11, 2022, 3:37 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
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-2021-20319.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2011862 | Issue Tracking Vendor Advisory |
| https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89 | Patch Third Party Advisory |
| https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593 | Third Party 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20319 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20319 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 -
Initial Analysis by [email protected]
Mar. 11, 2022
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2011862 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2011862 Issue Tracking, Vendor Advisory Changed Reference Type https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89 No Types Assigned https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89 Patch, Third Party Advisory Changed Reference Type https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593 No Types Assigned https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593 Third Party Advisory Added CWE NIST CWE-347 Added CPE Configuration OR *cpe:2.3:a:redhat:coreos-installer:*:*:*:*:*:*:*:* versions up to (excluding) 0.10.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20319 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-2021-20319
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.01%
score
0.36854
percentile