RedHat: RHSA-2019-0303:01 Important: runc security update
Summary
The runC tool is a lightweight, portable implementation of the Open
Container Format (OCF) that provides container runtime.
Security Fix(es):
* A flaw was found in the way runc handled system file descriptors when
running containers. A malicious container could use this flaw to overwrite
contents of the runc binary and consequently run arbitrary commands on the
container host system. (CVE-2019-5736)
Additional details about this flaw, including mitigation information, can
be found in the vulnerability article linked from the Reference section.
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.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2019-5736 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/runcescape
Package List
Red Hat Enterprise Linux 7 Extras:
Source:
runc-1.0.0-59.dev.git2abd837.el7.src.rpm
aarch64:
runc-1.0.0-59.dev.git2abd837.el7.aarch64.rpm
runc-debuginfo-1.0.0-59.dev.git2abd837.el7.aarch64.rpm
ppc64le:
runc-1.0.0-59.dev.git2abd837.el7.ppc64le.rpm
runc-debuginfo-1.0.0-59.dev.git2abd837.el7.ppc64le.rpm
s390x:
runc-1.0.0-59.dev.git2abd837.el7.s390x.rpm
runc-debuginfo-1.0.0-59.dev.git2abd837.el7.s390x.rpm
x86_64:
runc-1.0.0-59.dev.git2abd837.el7.x86_64.rpm
runc-debuginfo-1.0.0-59.dev.git2abd837.el7.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/
Topic
An update for runc is now available for Red Hat Enterprise Linux 7 Extras.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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux 7 Extras - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1664908 - CVE-2019-5736 runc: Execution of malicious containers allows for container escape and access to host filesystem