dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.
総合評価: CVE-2019-12749 は中リスク（43.5/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.56%、42 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 | 0.05% | 0.56% | +0.51% |
| 2 | 2026-05-30 | 0.06% | 0.05% | -0.01% |
| 3 | 2026-05-28 | — | 0.06% | — |
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 |
|---|---|---|---|---|---|---|
| 7.1 | 3.1 | HIGH |
|
1.8 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 7.1 | 3.0 | HIGH |
|
1.8 | 5.2 | [email protected] |
| 3.6 | 2.0 | LOW |
|
3.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2019-12749: 1 source package rows (dbus); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2019-12749 |
debian
|
not yet assigned | CVE-2019-12749 not yet assigned priority: Debian including 1 source packages (dbus), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-12749 |
gentoo
|
normal | CVE-2019-12749: 1 GLSA(s) (201909-08), 1 atom(s) (sys-apps/dbus); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-12749 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2019-12749 |
suse
|
medium | CVE-2019-12749 severity moderate: SUSE including 395 source package names (0.1.0:dbus-1-1.12.2-8.3.1, 0.1.0:libdbus-1-3-1.12.2-8.3.1, …), 687 product×package rows across 152 product lines (Container bci/bci-init, Container caasp/v4/cilium, … (152 product lines)): Fixed 548, Known Affected 139. | https://www.suse.com/security/cve/CVE-2019-12749/ |
ubuntu
|
medium | CVE-2019-12749 medium priority: Ubuntu including 1 source packages (dbus), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 5, needs-triage 1. | https://ubuntu.com/security/CVE-2019-12749 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| freedesktop | dbus | < 1.10.28 | cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* |
| freedesktop | dbus | >= 1.12.0, < 1.12.16 | cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* |
| freedesktop | dbus | >= 1.13.0, < 1.13.12 | cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.10 | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 19.04 | cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* |