An issue was discovered in Open-iSCSI through 2.0.875. A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths, which (due to lack of checking) can lead to buffer overflows, and result in aborts (with overflow checking enabled) or code execution. The process_iscsid_broadcast function in iscsiuio/src/unix/iscsid_ipc.c does not validate the payload length before a write operation.
総合評価: CVE-2017-17840 は中リスク（43.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.45%、35 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 | 0.15% | 0.45% | +0.29% |
| 2 | 2025-06-19 | 0.03% | 0.15% | +0.12% |
| 3 | 2025-03-30 | — | 0.03% | — |
EPSS の全履歴 （全 8 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 4.6 | 2.0 | MEDIUM |
|
3.9 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-17840 not yet assigned priority: Debian including 1 source packages (open-iscsi), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-17840 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-17840 |
suse
|
high | CVE-2017-17840 severity important: SUSE including 6 source package names (iscsiuio, libopeniscsiusr0_1_0, libopeniscsiusr0_2_0, open-iscsi, open-iscsi-2.0.873-0.41.4.1, open-iscsi-devel), 72 product×package rows across 29 product lines (SUSE CaaS Platform 4.0, SUSE CaaS Platform 4.5, … (29 product lines)): Known Not Affected 71, Fixed 1. | https://www.suse.com/security/cve/CVE-2017-17840/ |
ubuntu
|
medium | CVE-2017-17840 medium priority: Ubuntu including 1 source packages (open-iscsi), 7 status rows across 7 suites (artful, bionic, cosmic, trusty, upstream, xenial, zesty): not-affected 5, ignored 1, released 1. | https://ubuntu.com/security/CVE-2017-17840 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| open-iscsi_project | open-iscsi | <= 2.0.875 | cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2017/12/13/2 | Mailing List Third Party Advisory |
| https://bugzilla.opensuse.org/show_bug.cgi?id=1072312 | Issue Tracking Third Party Advisory |