A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.
総合評価: CVE-2023-42669 は中リスク（53.2/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.72%、74 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.14% 上昇。悪用への関心が高まっている可能性があります。 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 | 0.58% | 1.72% | +1.14% |
| 2 | 2025-11-28 | 0.50% | 0.58% | +0.08% |
| 3 | 2025-11-23 | — | 0.50% | — |
EPSS の全履歴 （全 16 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 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2023-42669: 1 source package rows (samba); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 6, open 1. | https://security.alpinelinux.org/vuln/CVE-2023-42669 |
debian
|
not yet assigned | CVE-2023-42669 not yet assigned priority: Debian including 1 source packages (samba), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2023-42669 |
gentoo
|
high | CVE-2023-42669: 1 GLSA(s) (202402-28), 1 atom(s) (net-fs/samba); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-42669 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-42669 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2023-42669/ |
ubuntu
|
medium | CVE-2023-42669 medium priority: Ubuntu including 1 source packages (samba), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 8, needs-triage 4. | https://ubuntu.com/security/CVE-2023-42669 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| samba | samba | >= 4.0.0, < 4.17.12 | cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* |
| samba | samba | >= 4.18.0, < 4.18.8 | cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* |
| samba | samba | >= 4.19.0, < 4.19.1 | cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* |
| redhat | storage | 3.0 | cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 9.0 | cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 9.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 9.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 9.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 9.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* |