The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.
総合評価: CVE-2008-1923 は中リスク（52.4/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.40%、69 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 | 1.52% | 1.40% | -0.12% |
| 2 | 2025-03-30 | 1.26% | 1.52% | +0.26% |
| 3 | 2025-03-29 | — | 1.26% | — |
EPSS の全履歴 （全 11 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 | 2.0 | HIGH |
|
8.6 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2008-1923 medium priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2008-1923 |
ubuntu
|
medium | CVE-2008-1923 medium priority: Ubuntu including 1 source packages (asterisk), 8 status rows across 8 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): not-affected 4, ignored 3, needs-triage 1. | https://ubuntu.com/security/CVE-2008-1923 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| asterisk | asterisk_appliance_developer_kit | — | cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | <= b2.5.1 | cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | <= c1.8.0 | cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | a | cpe:2.3:a:asterisk:asterisk_business_edition:a:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.1.3.2 | cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.2:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.1.3.3 | cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.3:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.2.0 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.0:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.2.1 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.1:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.3.1 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.1:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.3.2 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.2:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.3.3 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.3:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.3.4 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.4:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | b.2.5.0 | cpe:2.3:a:asterisk:asterisk_business_edition:b.2.5.0:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | c.1.0-beta7 | cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0-beta7:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | c.1.0-beta8 | cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0-beta8:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | c.1.0beta7 | cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0beta7:*:*:*:*:*:*:* |
| asterisk | asterisk_business_edition | c.1.6.1 | cpe:2.3:a:asterisk:asterisk_business_edition:c.1.6.1:*:*:*:*:*:*:* |
| asterisk | asterisknow | <= 1.0.2 | cpe:2.3:a:asterisk:asterisknow:*:*:*:*:*:*:*:* |
| asterisk | asterisknow | 1.0 | cpe:2.3:a:asterisk:asterisknow:1.0:*:*:*:*:*:*:* |
| asterisk | asterisknow | 1.0.1 | cpe:2.3:a:asterisk:asterisknow:1.0.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0 | cpe:2.3:a:asterisk:open_source:1.0:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.0 | cpe:2.3:a:asterisk:open_source:1.0.0:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.1 | cpe:2.3:a:asterisk:open_source:1.0.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.2 | cpe:2.3:a:asterisk:open_source:1.0.2:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.3 | cpe:2.3:a:asterisk:open_source:1.0.3:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.4 | cpe:2.3:a:asterisk:open_source:1.0.4:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.5 | cpe:2.3:a:asterisk:open_source:1.0.5:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.6 | cpe:2.3:a:asterisk:open_source:1.0.6:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.7 | cpe:2.3:a:asterisk:open_source:1.0.7:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.8 | cpe:2.3:a:asterisk:open_source:1.0.8:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.9 | cpe:2.3:a:asterisk:open_source:1.0.9:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.11 | cpe:2.3:a:asterisk:open_source:1.0.11:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.11.1 | cpe:2.3:a:asterisk:open_source:1.0.11.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.0.12 | cpe:2.3:a:asterisk:open_source:1.0.12:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.0 | cpe:2.3:a:asterisk:open_source:1.2.0:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.1 | cpe:2.3:a:asterisk:open_source:1.2.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.2 | cpe:2.3:a:asterisk:open_source:1.2.2:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.3 | cpe:2.3:a:asterisk:open_source:1.2.3:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.3 | cpe:2.3:a:asterisk:open_source:1.2.3:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.4 | cpe:2.3:a:asterisk:open_source:1.2.4:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.4 | cpe:2.3:a:asterisk:open_source:1.2.4:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.5 | cpe:2.3:a:asterisk:open_source:1.2.5:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.5 | cpe:2.3:a:asterisk:open_source:1.2.5:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.6 | cpe:2.3:a:asterisk:open_source:1.2.6:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.6 | cpe:2.3:a:asterisk:open_source:1.2.6:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.7 | cpe:2.3:a:asterisk:open_source:1.2.7:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.7 | cpe:2.3:a:asterisk:open_source:1.2.7:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.7.1 | cpe:2.3:a:asterisk:open_source:1.2.7.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.7.1 | cpe:2.3:a:asterisk:open_source:1.2.7.1:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.8 | cpe:2.3:a:asterisk:open_source:1.2.8:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.8 | cpe:2.3:a:asterisk:open_source:1.2.8:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.9 | cpe:2.3:a:asterisk:open_source:1.2.9:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.9.1 | cpe:2.3:a:asterisk:open_source:1.2.9.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.9.1 | cpe:2.3:a:asterisk:open_source:1.2.9.1:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.10 | cpe:2.3:a:asterisk:open_source:1.2.10:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.10 | cpe:2.3:a:asterisk:open_source:1.2.10:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.11 | cpe:2.3:a:asterisk:open_source:1.2.11:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.11 | cpe:2.3:a:asterisk:open_source:1.2.11:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.12 | cpe:2.3:a:asterisk:open_source:1.2.12:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.12 | cpe:2.3:a:asterisk:open_source:1.2.12:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.12.1 | cpe:2.3:a:asterisk:open_source:1.2.12.1:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.13 | cpe:2.3:a:asterisk:open_source:1.2.13:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.13 | cpe:2.3:a:asterisk:open_source:1.2.13:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.14 | cpe:2.3:a:asterisk:open_source:1.2.14:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.14 | cpe:2.3:a:asterisk:open_source:1.2.14:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.15 | cpe:2.3:a:asterisk:open_source:1.2.15:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.15 | cpe:2.3:a:asterisk:open_source:1.2.15:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.16 | cpe:2.3:a:asterisk:open_source:1.2.16:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.16 | cpe:2.3:a:asterisk:open_source:1.2.16:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.17 | cpe:2.3:a:asterisk:open_source:1.2.17:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.17 | cpe:2.3:a:asterisk:open_source:1.2.17:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.18 | cpe:2.3:a:asterisk:open_source:1.2.18:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.18 | cpe:2.3:a:asterisk:open_source:1.2.18:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.19 | cpe:2.3:a:asterisk:open_source:1.2.19:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.19 | cpe:2.3:a:asterisk:open_source:1.2.19:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.20 | cpe:2.3:a:asterisk:open_source:1.2.20:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.20 | cpe:2.3:a:asterisk:open_source:1.2.20:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.21 | cpe:2.3:a:asterisk:open_source:1.2.21:*:*:*:*:*:*:* |
| asterisk | open_source | 1.2.21 | cpe:2.3:a:asterisk:open_source:1.2.21:netsec:*:*:*:*:*:* |
| asterisk | open_source | 1.2.21.1 | cpe:2.3:a:asterisk:open_source:1.2.21.1:*:*:*:*:*:*:* |