CVE-2019-5736

HIGH

Description

runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.

References

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00084.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00029.html

http://www.openwall.com/lists/oss-security/2019/03/23/1

http://www.openwall.com/lists/oss-security/2019/06/28/2

http://www.openwall.com/lists/oss-security/2019/07/06/3

http://www.openwall.com/lists/oss-security/2019/07/06/4

http://www.openwall.com/lists/oss-security/2019/10/24/1

http://www.openwall.com/lists/oss-security/2019/10/29/3

http://www.securityfocus.com/bid/106976

https://access.redhat.com/errata/RHSA-2019:0303

https://access.redhat.com/errata/RHSA-2019:0304

https://access.redhat.com/errata/RHSA-2019:0401

https://access.redhat.com/errata/RHSA-2019:0408

https://access.redhat.com/errata/RHSA-2019:0975

https://access.redhat.com/security/cve/cve-2019-5736

https://access.redhat.com/security/vulnerabilities/runcescape

https://aws.amazon.com/security/security-bulletins/AWS-2019-002/

https://azure.microsoft.com/en-us/updates/cve-2019-5736-and-runc-vulnerability/

https://azure.microsoft.com/en-us/updates/iot-edge-fix-cve-2019-5736/

https://blog.dragonsector.pl/2019/02/cve-2019-5736-escape-from-docker-and.html

https://brauner.github.io/2019/02/12/privileged-containers.html

https://bugzilla.suse.com/show_bug.cgi?id=1121967

https://cloud.google.com/kubernetes-engine/docs/security-bulletins#february-11-2019-runc

https://github.com/docker/docker-ce/releases/tag/v18.09.2

https://github.com/Frichetten/CVE-2019-5736-PoC

https://github.com/opencontainers/runc/commit/0a8e4117e7f715d5fbeef398405813ce8e88558b

https://github.com/opencontainers/runc/commit/6635b4f0c6af3810594d2770f662f34ddc15b40d

https://github.com/q3k/cve-2019-5736-poc

https://github.com/rancher/runc-cve

https://kubernetes.io/blog/2019/02/11/runc-and-cve-2019-5736/

https://lists.apache.org/thread.html/[email protected]%3Cdev.dlab.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cuser.mesos.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.dlab.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.dlab.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.mesos.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.dlab.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.geode.apache.org%3E

https://lists.fedoraproject.org/archives/list/[email protected]/message/DLC52IOJN6IQJWJ6CUI6AIUP6GVVG2QP/

https://lists.fedoraproject.org/archives/list/[email protected]/message/EGZKRCKI3Y7FMADO2MENMT4TU24QGHFR/

https://lists.fedoraproject.org/archives/list/[email protected]/message/SWFJGIPYAAAMVSWWI3QWYXGA3ZBU2H4W/

https://lists.fedoraproject.org/archives/list/[email protected]/message/V6A4OSFM5GGOWW4ECELV5OHX2XRAUSPH/

https://security.gentoo.org/glsa/202003-21

https://security.netapp.com/advisory/ntap-20190307-0008/

https://softwaresupport.softwaregrp.com/document/-/facetsearch/document/KM03410944

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03913en_us

https://support.mesosphere.com/s/article/Known-Issue-Container-Runtime-Vulnerability-MSPH-2019-0003

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190215-runc

https://usn.ubuntu.com/4048-1/

https://www.exploit-db.com/exploits/46359/

https://www.exploit-db.com/exploits/46369/

https://www.openwall.com/lists/oss-security/2019/02/11/2

https://www.synology.com/security/advisory/Synology_SA_19_06

https://www.twistlock.com/2019/02/11/how-to-mitigate-cve-2019-5736-in-runc-and-docker/

Details

Source: MITRE

Published: 2019-02-11

Updated: 2020-11-16

Type: CWE-78

Risk Information

CVSS v2.0

Base Score: 9.3

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3.0

Base Score: 8.6

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

Impact Score: 6

Exploitability Score: 1.8

Severity: HIGH