Buildah: full container escape at build time

8.6 CVSS

Vulnerability Description

A flaw was found in Buildah (and subsequently Podman Build) which allows containers to mount arbitrary locations on the host filesystem into build containers. A malicious Containerfile can use a dummy image with a symbolic link to the root filesystem as a mount source and cause the mount operation to mount the host root filesystem inside the RUN step. The commands inside the RUN step will then have read-write access to the host filesystem, allowing for full container escape at build time.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Unknown

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Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 3.11

Vulnerable Versions:

4.15.0, 8090020240413110917.d7b6f4b7, 8090020240417184044.e7857ab1, 8100020240419145834.afee755d, 8060020240422155330.3b538bd8, 8060020240419071711.2e213529, 8080020240422101606.0f77c1b7, 1:1.31.5-1.el9_3, 4:4.9.4-3.el9_4, 1:1.26.7-1.el9_0, 2:4.2.0-3.el9_0, 1:1.29.3-1.el9_2, 2:4.4.1-16.el9_2, 3:4.4.1-3.2.rhaos4.12.el8, 3:4.4.1-6.3.rhaos4.13.el9, 3:4.4.1-8.3.rhaos4.13.el9, 3:4.4.1-13.4.rhaos4.14.el8, 3:4.4.1-23.2.rhaos4.15.el8