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ceph — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-27781

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.

Products
ceph
Affected versions
Not specified
Fixed versions
14.2.16-1
CVEs
CVE-2020-27781
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 12:51 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-27781

core-osv · Original source

Published 18 Dec 2020, 21:15 UTC

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.

osv:DEBIAN-CVE-2020-27781

ceph

Fixed versions: 14.2.16-1

ceph

Fixed versions: 14.2.16-1

ceph

Fixed versions: 14.2.16-1

Complete source record
{
  "id": "1d6088578324fd04921e553066a627e1807c287eeffc065696400b1cd076cf29",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-27781",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-27781",
    "summary": "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.",
    "evidence": "osv:DEBIAN-CVE-2020-27781",
    "products": [
      {
        "name": {
          "value": "ceph",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "14.2.16-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ceph",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "14.2.16-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ceph",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "14.2.16-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2020-27781",
      "aliases": [
        "DEBIAN-CVE-2020-27781"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "14.2.16-1"
                }
              ]
            }
          ],
          "package": {
            "name": "ceph",
            "purl": "pkg:deb/debian/ceph?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27781.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "14.2.16-1"
                }
              ]
            }
          ],
          "package": {
            "name": "ceph",
            "purl": "pkg:deb/debian/ceph?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27781.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "14.2.16-1"
                }
              ]
            }
          ],
          "package": {
            "name": "ceph",
            "purl": "pkg:deb/debian/ceph?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27781.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:01:08.193870964Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-27781"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-27781"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-27781",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 451474,
  "published_at": "2020-12-18T21:15:12.66+00:00"
}