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hackeroneAdam_iwaniukH1:495495
HistoryFeb 13, 2019 - 6:50 p.m.

Internet Bug Bounty: CVE-2019-5736: Escape from Docker and Kubernetes containers to root on host

2019-02-1318:50:11
adam_iwaniuk
hackerone.com
91

8.6 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.004 Low

EPSS

Percentile

70.4%

JSON

description here:
https://blog.dragonsector.pl/2019/02/cve-2019-5736-escape-from-docker-and.html
PoC: https://github.com/q3k/cve-2019-5736-poc

Some more links:
https://seclists.org/oss-sec/2019/q1/119
https://access.redhat.com/security/cve/cve-2019-5736

Impact

It allows to escape from container to root on host when unpatched version of Docker and Kubernetes are used.
This affects a pretty big part of internet, since a lot of services are using Docker and Kubernets these days.
It has also serious impact on cloud services
AWS https://aws.amazon.com/security/security-bulletins/AWS-2019-002/ and GCP https://cloud.google.com/kubernetes-engine/docs/security-bulletins#february-11-2019-runc
https://kubernetes.io/blog/2019/02/11/runc-and-cve-2019-5736/

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8.6 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.004 Low

EPSS

Percentile

70.4%

JSON
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