A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect <domain>;` is configured, and - the resolver receives a PTR query for an RFC 1918 address that would normally result in an authoritative NXDOMAIN response. This issue affects BIND 9 versions 9.12.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.
総合評価: CVE-2023-5517 は中リスク（53.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.23%、65 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.09% 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: 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 | 0.14% | 1.23% | +1.09% |
| 2 | 2026-01-05 | 0.16% | 0.14% | -0.01% |
| 3 | 2025-11-21 | — | 0.16% | — |
EPSS の全履歴 （全 20 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] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-5517: 1 source package rows (bind); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-5517 |
debian
|
not yet assigned | CVE-2023-5517 not yet assigned priority: Debian including 1 source packages (bind9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2023-5517 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2023-5517 |
suse
|
high | CVE-2023-5517 severity important: SUSE including 340 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 960 product×package rows across 175 product lines (Image SLES15-SP3-BYOS-Azure, Image SLES15-SP3-BYOS-EC2-HVM, … (175 product lines)): Fixed 676, Known Affected 195, Known Not Affected 89. | https://www.suse.com/security/cve/CVE-2023-5517/ |
ubuntu
|
medium | CVE-2023-5517 medium priority: Ubuntu including 3 source packages (bind9, bind9-libs, isc-dhcp), 30 status rows across 10 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 14, DNE 7, released 7, needs-triage 2. | https://ubuntu.com/security/CVE-2023-5517 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| fedoraproject | fedora | 38 | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
| fedoraproject | fedora | 39 | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |
| isc | bind | >= 9.12.0, <= 9.16.45 | cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* |
| isc | bind | >= 9.18.0, <= 9.18.21 | cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* |
| isc | bind | >= 9.19.0, <= 9.19.19 | cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* |
| isc | bind | 9.16.8 | cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.11 | cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.12 | cpe:2.3:a:isc:bind:9.16.12:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.13 | cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.14 | cpe:2.3:a:isc:bind:9.16.14:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.21 | cpe:2.3:a:isc:bind:9.16.21:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.32 | cpe:2.3:a:isc:bind:9.16.32:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.36 | cpe:2.3:a:isc:bind:9.16.36:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.43 | cpe:2.3:a:isc:bind:9.16.43:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.16.45 | cpe:2.3:a:isc:bind:9.16.45:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.18.11 | cpe:2.3:a:isc:bind:9.18.11:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.18.18 | cpe:2.3:a:isc:bind:9.18.18:s1:*:*:supported_preview:*:*:* |
| isc | bind | 9.18.21 | cpe:2.3:a:isc:bind:9.18.21:s1:*:*:supported_preview:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2024/02/13/1 | Mailing List Third Party Advisory |
| https://kb.isc.org/docs/cve-2023-5517 | Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20240503-0006/ | Third Party Advisory |