CVE-2021-20288 · cross-distro fix matrix

CVE-2021-20288: An authentication flaw was found in ceph in versions before 14.2.20. When the monitor handles CEPHX_GET_AUTH_SESSION_KEY requests, it doesn't sanitize other_keys, allowing key reuse. An attacker who can request a global_id can exploit the ability of any user to request a global_id previously associa

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-20288 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ceph→ fixed in14.2.20-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ceph
```

Debian bookworm

Source: Debian Security Tracker

ceph→ fixed in14.2.20-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ceph
```

Debian trixie

Source: Debian Security Tracker

ceph→ fixed in14.2.20-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ceph
```

Alpine v3.18

Source: Alpine secdb

ceph16→ fixed in16.2.3-r0
```
apk update && apk add --upgrade ceph16
```

Are YOU affected by CVE-2021-20288?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2021-20288dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)