containerd up to 1.5.8 on SELinux Volume Mount permissions

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in containerd up to 1.5.8 on SELinux. The affected element is an unknown function of the component Volume Mount Handler. Performing a manipulation results in permissions. This vulnerability was named CVE-2021-43816. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in containerd up to 1.5.8 on SELinux (Virtualization Software). This affects some unknown functionality of the component Volume Mount Handler. The manipulation with an unknown input leads to a permissions vulnerability. CWE is classifying the issue as CWE-281. The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 01/06/2022 as GHSA-mvff-h3cj-wj9c. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-43816 since 11/16/2021. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 211321 (Fedora 36 : containerd (2022-6f630b1ba7)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.5.9 eliminates this vulnerability. Applying the patch a731039238c62be081eb8c31525b988415745eea is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (211321) and CERT Bund (WID-SEC-2022-0235). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Red Hat Enterprise Linux
  • HCL Domino
  • SUSE Linux
  • Red Hat OpenShift

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.0
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Permissions
CWE: CWE-281 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211321
Nessus Name: Fedora 36 : containerd (2022-6f630b1ba7)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: containerd 1.5.9
Patch: a731039238c62be081eb8c31525b988415745eea

Timelineinfo

11/16/2021 🔍
01/06/2022 +51 days 🔍
01/06/2022 +0 days 🔍
11/16/2025 +1410 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-mvff-h3cj-wj9c
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43816 (🔍)
GCVE (CVE): GCVE-0-2021-43816
GCVE (VulDB): GCVE-100-189723
CERT Bund: WID-SEC-2022-0235 - Red Hat Advanced Cluster Management: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Entryinfo

Created: 01/06/2022 07:01
Updated: 11/16/2025 03:30
Changes: 01/06/2022 07:01 (53), 01/09/2022 08:51 (2), 11/15/2024 14:03 (16), 11/16/2025 03:30 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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