api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| nova(PyPI) | 0 | 2013.2.4 | N/A |
| nova(PyPI) | 2014.0.0 | 2014.1.2 | N/A |
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