CVE-2020-27781

NameCVE-2020-27781
DescriptionUser credentials can be manipulated and stolen by Native CephFS consumers of OpenStack Manila, resulting in potential privilege escalation. An Open Stack Manila user can request access to a share to an arbitrary cephx user, including existing users. The access key is retrieved via the interface drivers. Then, all users of the requesting OpenStack project can view the access key. This enables the attacker to target any resource that the user has access to. This can be done to even "admin" users, compromising the ceph administrator. This flaw affects Ceph versions prior to 14.2.16, 15.x prior to 15.2.8, and 16.x prior to 16.2.0.
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 severitylow
Debian Bugs985670

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
bullseye14.2.16-2fixed
sid14.2.18-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
cephsource(unstable)14.2.16-1985670

Notes

https://bugs.launchpad.net/manila/+bug/1904015
https://bugzilla.redhat.com/show_bug.cgi?id=1900109
https://github.com/ceph/ceph/commit/1b8a634fdcd94dfb3ba650793fb1b6d09af65e05 (octopus)
https://github.com/ceph/ceph/commit/7e3e4e73783a98bb07ab399438eb3aab41a6fc8b (nautilus)
https://github.com/ceph/ceph/commit/956ceb853a58f6b6847b31fac34f2f0228a70579 (luminous)

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