avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
総合評価: CVE-2017-6519 は悪用リスクが高い(79.5/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 1.29%、80 パーセンタイル) 根拠: 公開エクスプロイトが 1 件参照されています(Exploit-DB)。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-05-13 | 1.13% | 1.29% | +0.16% |
| 2 | 2025-12-30 | 1.48% | 1.13% | -0.34% |
| 3 | 2025-12-28 | — | 1.48% | — |
EPSS の全履歴 (全 25 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 |
|---|---|---|---|---|---|---|
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 9.1 | 3.0 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2017-6519: 1 source package rows (avahi); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2017-6519 |
debian
|
unimportant | CVE-2017-6519 unimportant priority: Debian including 1 source packages (avahi), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-6519 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2017-6519 |
suse
|
medium | CVE-2017-6519 severity moderate: SUSE including 169 source package names (avahi, avahi-0.6.31-20.el7, …), 303 product×package rows across 35 product lines (SUSE Liberty Linux 7, SUSE Liberty Linux 7 LTSS, … (35 product lines)): Fixed 192, Known Not Affected 111. | https://www.suse.com/security/cve/CVE-2017-6519/ |
ubuntu
|
low | CVE-2017-6519 low priority: Ubuntu including 1 source packages (avahi), 9 status rows across 9 suites (artful, bionic, cosmic, precise, trusty, upstream, xenial, yakkety, zesty): released 5, ignored 4. | https://ubuntu.com/security/CVE-2017-6519 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| avahi | avahi | <= 0.6.32 | cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:* |
| avahi | avahi | 0.7 | cpe:2.3:a:avahi:avahi:0.7:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.10 | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1426712 | Issue Tracking Patch Third Party Advisory |
| https://github.com/lathiat/avahi/issues/203 | Exploit Third Party Advisory |
| https://github.com/lathiat/avahi/issues/203#issuecomment-449536790 | Third Party Advisory |
| https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E | |
| https://usn.ubuntu.com/3876-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3876-2/ | Third Party Advisory |
| https://www.secfu.net/advisories | Third Party Advisory |