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TI-2021-12427 Aliases CVE-2021-32760GHSA-c72p-9xmj-rx3w

Archive package allows chmod of file outside of unpack target directory

Priority LOW 31CWE-668Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Partial Red Hat: 2 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01595 75th percentileScored 2026-11-07
Fix Partial github.com/containerd/containerd (Go): 1.4.8, 1.5.4Red Hat: 2 advisoriesRed Hat: 2 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
backstagecontainerdup to 1.4.7; 1.5.0 – 1.5.3—No fix listedCNA
—github.com/containerd/containerd (Go)before 1.4.81.4.8Patch availableGHSA-c72p-9xmj-rx3w
—github.com/containerd/containerd (Go)1.5.0 to before 1.5.41.5.4Patch availableGHSA-c72p-9xmj-rx3w
  • containerd Vendorbackstage Affected up to 1.4.7; 1.5.0 – 1.5.3 Fixed in — No fix listed CNA
  • github.com/containerd/containerd (Go) Vendor— Affected before 1.4.8 Fixed in 1.4.8 Patch available GHSA-c72p-9xmj-rx3w
  • github.com/containerd/containerd (Go) Vendor— Affected 1.5.0 to before 1.5.4 Fixed in 1.5.4 Patch available GHSA-c72p-9xmj-rx3w

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*before 1.4.8; 1.5.0 to before 1.5.4Vulnerablebackstage
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
  • cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:* Versions before 1.4.8; 1.5.0 to before 1.5.4 Vulnerable ·backstage
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject

Remediation

  • Fix · GHSA-c72p-9xmj-rx3w github.com/containerd/containerd (Go) Fixed in 1.4.8 Advisory →
  • Fix · GHSA-c72p-9xmj-rx3w github.com/containerd/containerd (Go) Fixed in 1.5.4 Advisory →

Red Hat 2 advisories

  • RHSA-2023:5952 Released 2023-10-19 · Red Hat rating Important
    Red Hat OpenShift Service Mesh for 2.4.4 security update
    • RHOSSM 2.4 for RHEL 8 openshift-service-mesh/grafana-rhel8, openshift-service-mesh/istio-cni-rhel8, openshift-service-mesh/istio-must-gather-rhel8 +6
  • RHSA-2022:2183 Released 2022-05-11 · Red Hat rating Moderate
    Release of containers for OSP 16.2.z director operator tech preview
    • Red Hat OpenStack Platform 16.2 rhosp-rhel8-tech-preview/osp-director-operator

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix yet
Red Hat OpenShift Data Science (RHODS)AffectedNo fix yet
Red Hat OpenStack Platform 16.2AffectedNo fix yet
cert-manager Operator for Red Hat OpenShiftAffected—
RHOSSM 2.4 for RHEL 8Fixed RHSA-2023:5952
Red Hat OpenStack Platform 16.2Fixed RHSA-2022:2183
Not affected: 24 products
  • Cost Management Metrics Operator
  • Cryostat 2
  • Logging Subsystem for Red Hat OpenShift
  • Migration Toolkit for Containers
  • Migration Toolkit for Virtualization
  • OpenShift API for Data Protection
  • OpenShift Serverless
  • OpenShift Service Mesh 2
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Advanced Cluster Security 3
  • Red Hat Advanced Cluster Security 4
  • Red Hat OpenShift Container Platform 3.11
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform Assisted Installer 1
  • Red Hat OpenShift Data Science (RHODS)
  • Red Hat OpenShift Dev Spaces
  • Red Hat OpenShift GitOps
  • Red Hat OpenShift Virtualization 4
  • Red Hat OpenShift distributed tracing 2
  • Red Hat OpenStack Platform 16.2
  • Red Hat Openshift Container Storage 4
  • Red Hat Openshift Data Foundation 4
  • Red Hat Openshift Sandboxed Containers
  • Red Hat Quay 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32760
  2. 2026-10-03 Alias added: GHSA-c72p-9xmj-rx3w

References

Advisory 6

Other 5

  • TI-2021-19622 Improper Preservation of Permissions in containerd CVSS 3.1CRITICAL 9.1
  • TI-2023-10635 containerd supplementary groups are not set up properly CVSS 3.1HIGH 7.8
  • TI-2022-07700 Insecure handling of image volumes in containerd CRI plugin CVSS 3.1HIGH 7.5
  • TI-2026-38567 Improper input validation in backstage containerd CVSS 4.0CRITICAL 9.4
  • TI-2026-38569 containerd CRI checkpoint restore CDI annotation smuggling CVSS 4.0HIGH 8.4
  • TI-2025-29820 Containerd vulnerable to host filesystem access during image unpack CVSS 4.0HIGH 7.6
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences