Vulnerability CVE-2019-5736


Published: 2019-02-11

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:
https://access.redhat.com/security/cve/cve-2019-5736
https://access.redhat.com/security/vulnerabilities/runcescape
https://github.com/docker/docker-ce/releases/tag/v18.09.2
https://github.com/opencontainers/runc/commit/0a8e4117e7f715d5fbeef398405813ce8e88558b
https://github.com/opencontainers/runc/commit/6635b4f0c6af3810594d2770f662f34ddc15b40d
https://www.openwall.com/lists/oss-security/2019/02/11/2

Copyright 2019, cxsecurity.com

 

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