| Name | CVE-2021-20288 |
| Description | 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 associated with another user, as ceph does not force the reuse of old keys to generate new ones. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3629-1 |
| Debian Bugs | 986974 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ceph (PTS) | jessie, jessie (lts) | 0.80.7-2+deb8u6 | vulnerable |
| stretch (security) | 10.2.11-2+deb9u1 | vulnerable | |
| stretch (lts), stretch | 10.2.11-2+deb9u2 | vulnerable | |
| buster (security), buster, buster (lts) | 12.2.11+dfsg1-2.1+deb10u1 | fixed | |
| bullseye | 14.2.21-1 | fixed | |
| bookworm | 16.2.11+ds-2 | fixed | |
| trixie | 18.2.4+ds-9 | fixed | |
| sid | 18.2.4+ds-10 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ceph | source | buster | 12.2.11+dfsg1-2.1+deb10u1 | DLA-3629-1 | ||
| ceph | source | (unstable) | 14.2.20-1 | 986974 |
[stretch] - ceph <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2021/04/14/2
https://github.com/ceph/ceph/commit/059eabcc0ada81078a898cdc25cf72bf3d506ad0
https://github.com/ceph/ceph/commit/05b3b6a305ddbb56cc53bbeadf5866db4d785f49
[jessie] - ceph <no-dsa> (Introduction of a new feature to distinguish between legacy clients and new clients)