CVE-2022-47951: An issue was discovered in OpenStack Cinder before 19.1.2, 20.x before 20.0.2, and 21.0.0; Glance before 23.0.
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MEDIUM 5.7WATCHLISTUPGRADEUPGRADEUPGRADE
CVE-2022-47951 is a medium-severity flaw (CVSS 5.7) affecting cinder, glance, nova. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in OpenStack Cinder before 19.1.2, 20.x before 20.0.2, and 21.0.0; Glance before 23.0.1, 24.x before 24.1.1, and 25.0.0; and Nova before 24.1.2, 25.x before 25.0.2, and 26.0.0. By supplying a specially created VMDK flat image that references a specific backing file path, an authenticated user may convince systems to return a copy of that file's contents from the server, resulting in unauthorized access to potentially sensi
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
openstack nova UPGRADE
Affected: < 24.1.2 · >= 25.0.0 and < 25.0.2
Fixed in: 24.1.2, 25.0.2
Safe to downgrade to: a release before 25.0.0
1. Check installed version
apt-cache policy nova || rpm -q nova || nova --version
2. UPGRADE to 24.1.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade nova
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade nova
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 25.0.0 (Debian / Ubuntu)
apt-cache madison nova
sudo apt install nova=<VERSION_BEFORE_25.0.0>
sudo apt-mark hold nova
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list nova
sudo dnf downgrade nova-<VERSION_BEFORE_25.0.0>
sudo dnf versionlock add nova
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
debian debian linux MITIGATE
Affected: 10.0 · 11.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 10.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2022-47951?
cinder: upgrade to 20.0.2; glance: upgrade to 23.0.1, 24.1.1; nova: upgrade to 24.1.2, 25.0.2. Exact commands for each OS are on this page.
Is CVE-2022-47951 being exploited?
CVE-2022-47951 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2022-47951 affect?
CVE-2022-47951 affects cinder, glance, nova. Severity is medium (CVSS 5.7). An issue was discovered in OpenStack Cinder before 19.1.2, 20.x before 20.0.2, and 21.0.0; Glance before 23.0.1, 24.x before 24.1.1, and 25.0.0; and Nova before 24.1.2, 25.x before 25.0.2, and 26.0.0. By supplying a specially created VMDK f
How urgent is CVE-2022-47951?
Priority 46/100. Public exploit reference; On your watchlist
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