The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.
総合評価: CVE-2015-8023 は中リスク（45.8/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.80%、73 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 | 2025-06-28 | 0.52% | 0.80% | +0.28% |
| 2 | 2025-03-30 | 1.36% | 0.52% | -0.84% |
| 3 | 2025-03-29 | — | 1.36% | — |
EPSS の全履歴 （全 5 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 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-8023 not yet assigned priority: Debian including 1 source packages (strongswan), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-8023 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2015-8023 |
suse
|
high | CVE-2015-8023 severity important: SUSE including 75 source package names (strongswan, strongswan-4.4.0-6.32.1, …), 190 product×package rows across 50 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (50 product lines)): Fixed 149, Known Not Affected 41. | https://www.suse.com/security/cve/CVE-2015-8023/ |
ubuntu
|
medium | CVE-2015-8023 medium priority: Ubuntu including 1 source packages (strongswan), 8 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): released 7, ignored 1. | https://ubuntu.com/security/CVE-2015-8023 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 15.04 | cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.2.12 | cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.2.13 | cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.2.14 | cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.2.15 | cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.2.16 | cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.0 | cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.1 | cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.2 | cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.3 | cpe:2.3:a:strongswan:strongswan:4.3.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.4 | cpe:2.3:a:strongswan:strongswan:4.3.4:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.5 | cpe:2.3:a:strongswan:strongswan:4.3.5:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.6 | cpe:2.3:a:strongswan:strongswan:4.3.6:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.3.7 | cpe:2.3:a:strongswan:strongswan:4.3.7:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.4.0 | cpe:2.3:a:strongswan:strongswan:4.4.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.4.1 | cpe:2.3:a:strongswan:strongswan:4.4.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.5.0 | cpe:2.3:a:strongswan:strongswan:4.5.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.5.1 | cpe:2.3:a:strongswan:strongswan:4.5.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.5.2 | cpe:2.3:a:strongswan:strongswan:4.5.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.5.3 | cpe:2.3:a:strongswan:strongswan:4.5.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.6.0 | cpe:2.3:a:strongswan:strongswan:4.6.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.6.1 | cpe:2.3:a:strongswan:strongswan:4.6.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.6.2 | cpe:2.3:a:strongswan:strongswan:4.6.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.6.3 | cpe:2.3:a:strongswan:strongswan:4.6.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 4.6.4 | cpe:2.3:a:strongswan:strongswan:4.6.4:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.0.0 | cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.0.1 | cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.0.2 | cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.0.3 | cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.0.4 | cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.1.0 | cpe:2.3:a:strongswan:strongswan:5.1.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.1.1 | cpe:2.3:a:strongswan:strongswan:5.1.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.1.2 | cpe:2.3:a:strongswan:strongswan:5.1.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.1.3 | cpe:2.3:a:strongswan:strongswan:5.1.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.2.0 | cpe:2.3:a:strongswan:strongswan:5.2.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.2.1 | cpe:2.3:a:strongswan:strongswan:5.2.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.2.2 | cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.2.3 | cpe:2.3:a:strongswan:strongswan:5.2.3:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.3.0 | cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.3.1 | cpe:2.3:a:strongswan:strongswan:5.3.1:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.3.2 | cpe:2.3:a:strongswan:strongswan:5.3.2:*:*:*:*:*:*:* |
| strongswan | strongswan | 5.3.3 | cpe:2.3:a:strongswan:strongswan:5.3.3:*:*:*:*:*:*:* |