Home/CVE/containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and ext
CVE

CVE-2021-32760

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and ext

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky.

This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources.

Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

MEDIUM · CVSS 5 EPSS 0.00071
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-668Exposure of Resource to Wrong Sphere
CWE-732Incorrect Permission Assignment for Critical Resource
▤

Affected Products & Versions

3
linuxfoundation containerd< 1.4.8
linuxfoundation containerd>= 1.5.0 and < 1.5.4
fedoraproject fedoraall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/containerd/containerd MODERATE fixed in 1.4.8
▣

Scoring & Timeline

5
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Jul 2021 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

15
suse-csafopenSUSE-SU-2024:10693-1
suse-csafopenSUSE-SU-2024:11619-1
rhsaRHSA-2023:5952Important
usnUSN-5521-1
suse-csafopenSUSE-SU-2021:1404-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/containerd/containerd/releases/tag/v1.4.8Release NotesThird Party Advisory
https://github.com/containerd/containerd/releases/tag/v1.5.4Release NotesThird Party Advisory
https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3wThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/
https://security.gentoo.org/glsa/202401-31
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