Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nova | 2014.1.1-8 | — |
| Debian 13 | nova | 2014.1.1-8 | — |
| Debian 12 | nova | 2014.1.1-8 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | nova | 1:2014.1.2-0ubuntu1.1 | USN-2325-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 5 | python-nova +13 | 2014.1.1-4.el7ost | RHSA-2014:0940 |
| Red Hat OpenStack 4 | python-nova +13 | 2013.2.3-12.el6ost | RHSA-2014:1084 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | nova | < 2013.2.4 | 2013.2.4 | GHSA-xjmj-p278-4jp5 |
| PyPI | nova | >= 2014.0.0, < 2014.1.2 | 2014.1.2 | GHSA-xjmj-p278-4jp5 |
| PyPI | nova | < 2013.2.4 · >= 2014.0.0, < 2014.1.2 | 2013.2.4, 2014.1.2 | PYSEC-2026-884 |
Advisories 3
- RHSA-2014:1084 Red Hat Security Advisory: openstack-nova security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- RHSA-2014:0940 Red Hat Security Advisory: openstack-nova security and bug fix update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- USN-2325-1 nova vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026