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Message #16958
[Bug 1335208] Re: Shell injection possibility in cmd/control.py
** Information type changed from Private Security to Public
** Changed in: ossa
Status: Incomplete => Invalid
** Tags added: security
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https://bugs.launchpad.net/bugs/1335208
Title:
Shell injection possibility in cmd/control.py
Status in OpenStack Image Registry and Delivery Service (Glance):
New
Status in OpenStack Security Advisories:
Invalid
Bug description:
The glance/cmd/control.py file contains a possible shell injection
vulnerability:
https://github.com/openstack/glance/blob/master/glance/cmd/control.py#L134
. Setting 'shell=True' here opens the possibility of shell injection
by setting server to something like '; rm -rf /'. This will cause the
command 'rm -rf /' to be run with the privileges of the user that ran
Glance.
This may not be a major security concern at this time because the only
place that I found for 'server' to come from is a Glance configuration
file, which should be locked down. Only privileged users should have
write access to the config file, and if they want to do bad things on
the system there are easier ways.
Still, 'shell=True' appears to be completely unnecessary for this
call. Simply omitting the shell parameter here will cause it to
revert to the default behavior, which requires that the command to be
run be specified in a separate parameter than the arguments to the
command. This effectively prevents shell injection vulnerabilities.
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