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4.5 Medium

CVE-2026-79705 Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers

Description

A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

Exploitable remotely over the network, with an administrator account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
High
Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat Ansible Automation Platform 2 Versions not published
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Hardened Images Versions not published
Red Hat OpenShift Container Platform 4 Versions not published
Red Hat OpenShift Dev Spaces Versions not published
Red Hat OpenShift Virtualization 4 Versions not published
Red Hat Quay 3 Versions not published
Show the other branch
Product Affected versions Fixed in
Red Hat OpenShift Container Platform 5 Versions not published

References

Timeline

  1. Published
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