CVE-2020-27781

Published: 18 December 2020

User 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.

Priority

Medium

CVSS 3 base score: 7.1

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
Upstream
Released (15.2.8)
Ubuntu 21.04 (Hirsute Hippo) Needed

Ubuntu 20.10 (Groovy Gorilla) Needed

Ubuntu 20.04 LTS (Focal Fossa) Needed

Ubuntu 18.04 LTS (Bionic Beaver) Needed

Ubuntu 16.04 ESM (Xenial Xerus) Needed

Ubuntu 14.04 ESM (Trusty Tahr) Needs triage

Patches:
Upstream: https://github.com/ceph/ceph/commit/1b8a634fdcd94dfb3ba650793fb1b6d09af65e05 (octopus) (15.2.8)
Upstream: https://github.com/ceph/ceph/commit/7e3e4e73783a98bb07ab399438eb3aab41a6fc8b (nautilus)
Upstream: https://github.com/ceph/ceph/commit/956ceb853a58f6b6847b31fac34f2f0228a70579 (luminous)

Notes

AuthorNote
mdeslaur
this is fixed in 15.2.8 in focal-updates and groovy-updates but
has not been pushed to the security pocket

References

Bugs