CVE-2019-16884

moderate-risk

Published 2019-09-25

runc through 1.0.0-rc8, as used in Docker through 19.03.2-ce and other products, allows AppArmor restriction bypass because libcontainer/rootfs_linux.go incorrectly checks mount targets, and thus a malicious Docker image can mount over a /proc directory.

Do I need to act?

0.35% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Runc

Docker

Fedora

Leap

Openshift Container Platform

Enterprise Linux

Enterprise Linux Eus

Affected Vendors

Redhat Canonical Fedoraproject Opensuse Linuxfoundation Docker

References (30)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00073.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00009.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00010.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:3940

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:4074

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:4269

Exploit https://github.com/opencontainers/runc/issues/2128

https://lists.debian.org/debian-lts-announce/2023/02/msg00016.html

https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://security.gentoo.org/glsa/202003-21

Third Party Advisory https://security.netapp.com/advisory/ntap-20220221-0004/

Third Party Advisory https://usn.ubuntu.com/4297-1/

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00073.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00009.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00010.html

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:3940

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:4074

and 10 more references

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 1/34 · Minimal

Exposure 22/34 · High