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Red Hat: RHSA-2021-2370-01 Critical: runc Symlink Attack Resolution

red hat
Calendar Grey June 10, 2021
Dist Redhat Esm H88
An important security patch for container-tools:3.0 in Red Hat Enterprise Linux 8 addresses a symbolic link swapping threat.
An update for the container-tools:3.0 module is now available for Red Hat Enterprise Linux 8

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

Summary

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.
Security Fix(es):
* runc: vulnerable to symlink exchange attack (CVE-2021-30465)
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.

Topics%20covered

Topics Covered

security advisory update symlink attack important red hat enterprise runc container-tools

References

https://access.redhat.com/security/cve/CVE-2021-30465 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-004

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: buildah-1.19.7-1.module+el8.4.0+11310+8c67a752.src.rpm cockpit-podman-29-2.module+el8.4.0+11310+8c67a752.src.rpm conmon-2.0.26-1.module+el8.4.0+11310+8c67a752.src.rpm container-selinux-2.158.0-1.module+el8.4.0+11310+8c67a752.src.rpm containernetworking-plugins-0.9.1-1.module+el8.4.0+11310+8c67a752.src.rpm criu-3.15-1.module+el8.4.0+11310+8c67a752.src.rpm crun-0.18-2.module+el8.4.0+11310+8c67a752.src.rpm fuse-overlayfs-1.4.0-2.module+el8.4.0+11310+8c67a752.src.rpm libslirp-4.3.1-1.module+el8.4.0+11310+8c67a752.src.rpm oci-seccomp-bpf-hook-1.2.0-1.module+el8.4.0+11310+8c67a752.src.rpm podman-3.0.1-6.module+el8.4.0+11310+8c67a752.src.rpm runc-1.0.0-71.rc92.module+el8.4.0+11310+8c67a752.src.rpm skopeo-1.2.2-7.module+el8.4.0+11310+8c67a752.src.rpm slirp4netns-1.1.8-1.module+el8.4.0+11310+8c67a752.src.rpm toolbox-0.0.8-1.module+el8.4.0+11310+8c67a752.src.rpm udica-0.2.4-1.module+el8.4.0+11310+8c67a752.src.rpm
aarch64: buildah-1.19.7-1.module+el8.4.0+11310+8c67a752.aarch64.rpm buildah-debuginfo-1.19.7-1.module+el8.4.0+11310+8c67a752.aarch64.rpm buildah-debugsource-1.19.7-1.module+el8.4.0+11310+8c67a752.aarch64.rpm buildah-tests-1.19.7-1.module+el8.4.0+11310+8c67a752.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2370-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2370
Issue date: 2021-06-10

Topic

An update for the container-tools:3.0 module is now available for Red HatEnterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory update symlink attack important red hat enterprise runc container-tools

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1954736 - CVE-2021-30465 runc: vulnerable to symlink exchange attack

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