The admin command in ceph-deploy before 1.5.25 uses world-readable permissions for /etc/ceph/ceph.client.admin.keyring, which allows local users to obtain sensitive information by reading the file.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-4053
• http://rhn.redhat.com/errata/RHSA-2015-1092.html
• http://tracker.ceph.com/issues/11694
• http://www.openwall.com/lists/oss-security/2015/04/09/9
• http://www.openwall.com/lists/oss-security/2015/05/22/1
• ceph/ceph-deploy#300
• ceph/ceph-deploy@9f9fd6e
• https://web.archive.org/web/20200228093353/http://www.securityfocus.com/bid/74775
• https://github.com/pypa/advisory-database/tree/main/vulns/ceph-deploy/PYSEC-2015-3.yaml