CVE-2021-21334
Containerd CRI Environment Variable Information Exposure
Description
In containerd (an industry-standard container runtime) before versions 1.3.10 and 1.4.4, containers launched through containerd's CRI implementation (through Kubernetes, crictl, or any other pod/container client that uses the containerd CRI service) that share the same image may receive incorrect environment variables, including values that are defined for other containers. If the affected containers have different security contexts, this may allow sensitive information to be unintentionally shared. If you are not using containerd's CRI implementation (through one of the mechanisms described above), you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image which have different environment variables, you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image in rapid succession, you have reduced likelihood of being vulnerable to this issue This vulnerability has been fixed in containerd 1.3.10 and containerd 1.4.4. Users should update to these versions.
INFO
Published Date :
March 10, 2021, 10:15 p.m.
Last Modified :
Nov. 7, 2023, 3:29 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-21334 has a 2 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-2021-21334
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-2021-21334.
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).
⚙ DevSecOps Kubernetes Playground ("A Hacker's Guide to Kubernetes")
Dockerfile Shell Ruby Smarty Jinja HCL
A python script to create daily reports from Threatstack
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21334 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21334 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. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/ -
Modified Analysis by [email protected]
Jun. 03, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202105-33 No Types Assigned https://security.gentoo.org/glsa/202105-33 Third Party Advisory -
CVE Modified by [email protected]
May. 26, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202105-33 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 24, 2021
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/ Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 19, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/ [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 19, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Changed Reference Type https://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e No Types Assigned https://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e Patch, Third Party Advisory Changed Reference Type https://github.com/containerd/containerd/releases/tag/v1.3.10 No Types Assigned https://github.com/containerd/containerd/releases/tag/v1.3.10 Release Notes, Third Party Advisory Changed Reference Type https://github.com/containerd/containerd/releases/tag/v1.4.4 No Types Assigned https://github.com/containerd/containerd/releases/tag/v1.4.4 Release Notes, Third Party Advisory Changed Reference Type https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4 No Types Assigned https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4 Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.10 *cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:* versions from (including) 1.4.0 up to (excluding) 1.4.4 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21334 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-2021-21334
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.46503
percentile