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Red Hat Security Advisory 2017-0127-01
Posted Jan 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0127-01 - The runC tool is a lightweight, portable implementation of the Open Container Format that provides container runtime. Security Fix: The runc component used by `docker exec` feature of docker allowed additional container processes via to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain low-level access to these new processes during initialization. An attacker can, depending on the nature of the incoming process, leverage this to elevate access to the host. This ranges from accessing host content through the file descriptors of the incoming process to, potentially, a complete container escape by leveraging memory access or syscall interception.

tags | advisory, root
systems | linux, redhat
advisories | CVE-2016-9962
SHA-256 | 4c009cc7dea6f028ae1cb75fe2f5bfda87b81084285a319bcc950f148b79cd52

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