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CVE-2016-9962

Public on 2017-01-10
Modified on 2017-01-10
Description

The runc component used by `docker exec` feature of docker allowed additional container processes 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.

Severity
Important
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CVSS v3 Base Score
7.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 docker 2017-01-10 18:00 ALAS-2017-783

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD CVSSv2 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P
NVD CVSSv3 6.4 CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H