UBUNTU-CVE-2019-5736

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UBUNTU-CVE-2019-5736

Summary:

Details: 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: https://ubuntu.com/security/CVE-2019-5736, https://www.openwall.com/lists/oss-security/2019/02/11/2, https://www.cve.org/CVERecord?id=CVE-2019-5736, https://ubuntu.com/security/notices/USN-4048-1