Reviewed: https://review.openstack.org/393147 Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=02dfb1a64f8a545a6dfed15245ac54c8ea835b81 Submitter: Jenkins Branch: stable/newton
commit 02dfb1a64f8a545a6dfed15245ac54c8ea835b81 Author: Daniel Gonzalez <email address hidden> Date: Mon Oct 17 10:22:42 2016 +0200
Prevent template validate from scanning ports
The template validation method in the heat API allows to specify the template to validate using a URL with the 'template_url' parameter.
By entering invalid http URLs, like 'http://localhost:22' it is possible to scan ports by evaluating the error message of the request.
For example, the request
curl -H "Content-Type: application/json" -H "X-Auth-Token: <TOKEN>" \ -X POST -d '{"template_url": "http://localhost:22"}' \ http://127.0.0.1:8004/v1/<TENANT_ID>/validate
causes the following error message to be returned to the user:
"Could not retrieve template: Failed to retrieve template: ('Connection aborted.', BadStatusLine('SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.1\\r\\n',))"
This could be misused by tenants to gain knowledge about the internal network the heat API runs in.
To prevent this information leak, this patch alters the error message to not include such details when the url scheme is not 'file'.
SecurityImpact
Closes-Bug: #1606500
Change-Id: Id1f86f41c1e6c028d889eca7ccbb9cde67631950 (cherry picked from commit eab9a33ce760c55695a5beb2e541487588b08c98)
Reviewed: https:/ /review. openstack. org/393147 /git.openstack. org/cgit/ openstack/ heat/commit/ ?id=02dfb1a64f8 a545a6dfed15245 ac54c8ea835b81
Committed: https:/
Submitter: Jenkins
Branch: stable/newton
commit 02dfb1a64f8a545 a6dfed15245ac54 c8ea835b81
Author: Daniel Gonzalez <email address hidden>
Date: Mon Oct 17 10:22:42 2016 +0200
Prevent template validate from scanning ports
The template validation method in the heat API allows to specify the
template to validate using a URL with the 'template_url' parameter.
By entering invalid http URLs, like 'http:// localhost: 22' it is
possible to scan ports by evaluating the error message of the request.
For example, the request
curl -H "Content-Type: application/json" -H "X-Auth-Token: <TOKEN>" \ localhost: 22"}' \ 127.0.0. 1:8004/ v1/<TENANT_ ID>/validate
-X POST -d '{"template_url": "http://
http://
causes the following error message to be returned to the user:
"Could not retrieve template: Failed to retrieve template: ne('SSH- 2.0-OpenSSH_ 7.2p2 Ubuntu- 4ubuntu2. 1\\r\\n' ,))"
('Connection aborted.',
BadStatusLi
This could be misused by tenants to gain knowledge about the internal
network the heat API runs in.
To prevent this information leak, this patch alters the error message
to not include such details when the url scheme is not 'file'.
SecurityImpact
Closes-Bug: #1606500
Change-Id: Id1f86f41c1e6c0 28d889eca7ccbb9 cde67631950 695a5beb2e54148 7588b08c98)
(cherry picked from commit eab9a33ce760c55