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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: buildah security and bug fix update
Advisory ID:       RHSA-2020:1231-01
Product:           Red Hat Enterprise Linux Extras
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:1231
Issue date:        2020-03-31
CVE Names:         CVE-2020-8945 
=====================================================================

1. Summary:

An update for buildah is now available for Red Hat Enterprise Linux 7
Extras.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux 7 Extras - ppc64le, s390x, x86_64

3. Description:

The buildah package provides a tool for facilitating building OCI container
images. Among other things, buildah enables you to:
* Create a working container, either from scratch or using an image as a
starting point.
* Create an image, either from a working container or using the
instructions in a Dockerfile.
* Build both Docker and OCI images.

Security Fix(es):

* proglottis/gpgme: Use-after-free in GPGME bindings during container image
pull (CVE-2020-8945)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Bug Fix(es):

* rootless buildah does not work with UID in /etc/subuid (BZ#1765469)

* Extras RHEL-7.8 update - buildah (BZ#1791286)

* buildah should be linked against gpgme-pthread (BZ#1793074)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1765469 - rootless buildah does not work with UID in /etc/subuid
1791286 - Extras RHEL-7.8 update - buildah
1795838 - CVE-2020-8945 proglottis/gpgme: Use-after-free in GPGME bindings
 during container image pull

6. Package List:

Red Hat Enterprise Linux 7 Extras:

Source:
buildah-1.11.6-8.el7_8.src.rpm

ppc64le:
buildah-1.11.6-8.el7_8.ppc64le.rpm
buildah-debuginfo-1.11.6-8.el7_8.ppc64le.rpm

s390x:
buildah-1.11.6-8.el7_8.s390x.rpm
buildah-debuginfo-1.11.6-8.el7_8.s390x.rpm

x86_64:
buildah-1.11.6-8.el7_8.x86_64.rpm
buildah-debuginfo-1.11.6-8.el7_8.x86_64.rpm

Red Hat Enterprise Linux 7 Extras:

Source:
buildah-1.11.6-8.el7_8.src.rpm

x86_64:
buildah-1.11.6-8.el7_8.x86_64.rpm
buildah-debuginfo-1.11.6-8.el7_8.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2020-8945
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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