The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.
総合評価: CVE-2007-4103 は高リスク(65.6/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 5.94%、92 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 直近 1 日で EPSS が +3.32% 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: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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 | 2.62% | 5.94% | +3.32% |
| 2 | 2026-03-19 | 2.69% | 2.62% | -0.07% |
| 3 | 2025-12-06 | — | 2.69% | — |
EPSS の全履歴 (全 21 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 7.8 | 2.0 | HIGH |
|
10.0 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2007-4103: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. | https://security.alpinelinux.org/vuln/CVE-2007-4103 |
debian
|
not yet assigned | CVE-2007-4103 not yet assigned priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2007-4103 |
gentoo
|
high | CVE-2007-4103: 1 GLSA(s) (200802-11), 1 atom(s) (net-misc/asterisk); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-4103 |
ubuntu
|
medium | CVE-2007-4103 medium priority: Ubuntu including 1 source packages (asterisk), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): not-affected 4, needs-triage 1. | https://ubuntu.com/security/CVE-2007-4103 |
| URL | タグ |
|---|---|
| http://bugs.gentoo.org/show_bug.cgi?id=185713 | Issue Tracking Patch |
| http://ftp.digium.com/pub/asa/ASA-2007-018.pdf | Broken Link Patch |
| http://osvdb.org/38197 | Broken Link |
| http://secunia.com/advisories/26274 | Broken Link Patch Vendor Advisory |
| http://secunia.com/advisories/29051 | Broken Link |
| http://security.gentoo.org/glsa/glsa-200802-11.xml | Third Party Advisory |
| http://securityreason.com/securityalert/2960 | Broken Link |
| http://www.securityfocus.com/archive/1/475069/100/0/threaded | Broken Link Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/24950 | Broken Link Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id?1018472 | Broken Link Third Party Advisory VDB Entry |
| http://www.vupen.com/english/advisories/2007/2701 | Broken Link |