CVE-2021-3602

Summary

An information disclosure flaw was found in Buildah, when building containers using chroot isolation. Running processes in container builds (e.g. Dockerfile RUN commands) can access environment variables from parent and grandparent processes. When run in a container in a CI/CD environment, environment variables may include sensitive information that was shared with the container in order to be used only by Buildah itself (e.g. container registry credentials).

Affected Software

Weaknesses

• CWE-200: CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.redhat.com/show_bug.cgi?id=1969264
• https://ubuntu.com/security/CVE-2021-3602
• https://github.com/containers/buildah/security/advisories/GHSA-7638-r9r3-rmjj
• https://github.com/containers/buildah/commit/a468ce0ffd347035d53ee0e26c205ef604097fb0

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1969264
• https://ubuntu.com/security/CVE-2021-3602
• https://github.com/containers/buildah/security/advisories/GHSA-7638-r9r3-rmjj
• https://github.com/containers/buildah/commit/a468ce0ffd347035d53ee0e26c205ef604097fb0

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