In Docker before 18.09.4, an attacker who is capable of supplying or manipulating the build path for the "docker build" command would be able to gain command execution. An issue exists in the way "docker build" processes remote git URLs, and results in command injection into the underlying "git clone" command, leading to code execution in the context of the user executing the "docker build" command. This occurs because git ref can be misinterpreted as a flag.
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
| Link | Tags |
|---|---|
| https://github.com/moby/moby/pull/38944 | third party advisory patch |
| https://docs.docker.com/engine/release-notes/#18094 | release notes vendor advisory |
| https://staaldraad.github.io/post/2019-07-16-cve-2019-13139-docker-build/ | third party advisory exploit |
| https://www.debian.org/security/2019/dsa-4521 | vendor advisory |
| https://security.netapp.com/advisory/ntap-20190910-0001/ | |
| https://seclists.org/bugtraq/2019/Sep/21 | mailing list |
| https://access.redhat.com/errata/RHBA-2019:3092 | vendor advisory |