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CVE-2019-5736

8.6 · HIGH

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…

Published Feb 11, 2019CWE-78EPSS 98.45%

Overview

CVE-2019-5736 is a high-severity vulnerability. It was published on February 11, 2019 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-03/msg00044.htmlReflists.opensuse.org/opensuse-security-announce/2019-04/msg00074.htmlReflists.opensuse.org/opensuse-security-announce/2019-04/msg00091.htmlReflists.opensuse.org/opensuse-security-announce/2019-05/msg00060.htmlReflists.opensuse.org/opensuse-security-announce/2019-05/msg00073.htmlReflists.opensuse.org/opensuse-security-announce/2019-06/msg00011.htmlReflists.opensuse.org/opensuse-security-announce/2019-06/msg00015.htmlReflists.opensuse.org/opensuse-security-announce/2019-08/msg00084.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00007.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00029.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-5736?

CVE-2019-5736 is a high-severity vulnerability. It was published on February 11, 2019 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2019-5736?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-5736?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-5736?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-5736 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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