CVE-2021-20288

NameCVE-2021-20288
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs986974

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ceph (PTS)stretch (security), stretch10.2.11-2vulnerable
buster12.2.11+dfsg1-2.1vulnerable
bullseye14.2.16-2vulnerable
sid14.2.20-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
cephsource(unstable)14.2.20-1986974

Notes

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

Search for package or bug name: Reporting problems