A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients correctly and is then vulnerable to replay attacks in Nautilus. This flaw allows an attacker with access to the Ceph cluster network to authenticate with the Ceph service via a packet sniffer and perform actions allowed by the Ceph service. This issue is a reintroduction of CVE-2018-1128, affecting the msgr2 protocol. The msgr 2 protocol is used for all communication except older clients that do not support the msgr2 protocol. The msgr1 protocol is not affected. The highest threat from this vulnerability is to confidentiality, integrity, and system availability.
総合評価: CVE-2020-25660 は中リスク（56.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.02%、59 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.19% | 1.02% | +0.83% |
| 2 | 2026-05-26 | 0.27% | 0.19% | -0.08% |
| 3 | 2025-11-21 | — | 0.27% | — |
EPSS の全履歴 （全 14 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 5.8 | 2.0 | MEDIUM |
|
6.5 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2020-25660: 2 source package rows (ceph, ceph16); 7 state rows across 3 repos (3.17-community, 3.18-community, edge-community); fixed 4, open 3. | https://security.alpinelinux.org/vuln/CVE-2020-25660 |
debian
|
not yet assigned | CVE-2020-25660 not yet assigned priority: Debian including 1 source packages (ceph), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2020-25660 |
gentoo
|
normal | CVE-2020-25660: 1 GLSA(s) (202105-39), 1 atom(s) (sys-cluster/ceph); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-25660 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-25660 |
suse
|
high | CVE-2020-25660 severity important: SUSE including 436 source package names (0.38.1.5.8.40:librados2-15.2.5.667+g1a579d5bf2-3.5.1, 0.38.1.5.8.40:librbd1-15.2.5.667+g1a579d5bf2-3.5.1, …), 916 product×package rows across 74 product lines (Container caasp/v4/hyperkube, Container ses/6/cephcsi/cephcsi, … (74 product lines)): Fixed 460, Known Not Affected 456. | https://www.suse.com/security/cve/CVE-2020-25660/ |
ubuntu
|
medium | CVE-2020-25660 medium priority: Ubuntu including 1 source packages (ceph), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): not-affected 3, released 3. | https://ubuntu.com/security/CVE-2020-25660 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| redhat | ceph | < 14.2.14 | cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:* |
| redhat | ceph | >= 15.0.0, < 15.2.6 | cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:* |
| redhat | ceph_storage | 2.0 | cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:* |
| redhat | ceph_storage | 4.0 | cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.0 | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1890354 | Issue Tracking Third Party Advisory |
| https://ceph.io/community/v15-2-6-octopus-released/ | Release Notes Vendor Advisory |
| https://ceph.io/releases/v14-2-14-nautilus-released/ | Release Notes Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBC4KZ44QUQENTYZPVHORGL4K2KV5V4F/ | |
| https://security.gentoo.org/glsa/202105-39 | Third Party Advisory |