Edgeless Systems Contrast before 1.9.1 Insecure Volume Mount
Contrast, Edgeless Systems' runtime for confidential containers on Kubernetes, is affected in versions up to and including 1.9.0. The VOLUME directive in a Dockerfile (config.volumes in the OCI image configuration) is only a hint and is not handled specially by Kubernetes, but containerd adds a mount point for it when Kubernetes sets none, requiring the runtime to be able to push arbitrary data to the Kata agent. As a result, on bare-metal Contrast deployments (AKS deployments are not affected) that run an image declaring at least one VOLUME for which no Kubernetes mount exists at that path, the untrusted host can write arbitrary file trees below that mount point inside the confidential container, compromising the integrity of a directory that is typically important to the application's core functionality. Version 1.9.1 fixes the issue by disallowing this configuration in `contrast generate`.
CVE-2025-71424
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-71424
contrast
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "edgelesssys",
"product": "contrast",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.9.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.9.1",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/edgelesssys/contrast",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2025-71424
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12650 · Revision 1
- Added to Heist Feed
- Publisher date