Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
総合評価: CVE-2024-38475 は在野悪用が確認された重大脅威(100/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 99.96%、100 パーセンタイル) 根拠: CISA KEV に登録(追加日 2025-05-01)。Apache / HTTP Server が対象で、弱点分類 CWE-116の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 直近 1 日で EPSS が +6.10% 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: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Apache HTTP Server Improper Escaping of Output Vulnerability · CISA KEV の詳細
: 2025-05-01
: 2025-05-22
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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 | 93.86% | 99.96% | +6.10% |
| 2 | 2026-05-10 | 93.78% | 93.86% | +0.08% |
| 3 | 2026-05-01 | — | 93.78% | — |
EPSS の全履歴 (全 52 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 | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2024-38475: 1 source package rows (apache2); 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-2024-38475 |
debian
|
not yet assigned | CVE-2024-38475 not yet assigned priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2024-38475 |
gentoo
|
low | CVE-2024-38475: 1 GLSA(s) (202409-31), 1 atom(s) (www-servers/apache); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-38475 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2024-38475 |
suse
|
high | CVE-2024-38475 severity important: SUSE including 323 source package names (2.8:apache2-utils-2.4.58-150600.5.18.1, 4.3.13.9.57.7:apache2-2.4.51-150400.6.29.1, …), 540 product×package rows across 77 product lines (Container bci/php-apache, Container suse/manager/4.3/proxy-httpd, … (77 product lines)): Fixed 309, Known Affected 231. | https://www.suse.com/security/cve/CVE-2024-38475/ |
ubuntu
|
high | CVE-2024-38475 high priority: Ubuntu including 1 source packages (apache2), 10 status rows across 10 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, trusty, upstream, xenial): released 10. | https://ubuntu.com/security/CVE-2024-38475 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | >= 2.4.0, < 2.4.60 | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
| netapp | ontap_9 | — | cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:* |
| sonicwall | sma_200_firmware | < 10.2.1.14-75sv | cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:* |
| sonicwall | sma_210_firmware | < 10.2.1.14-75sv | cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:* |
| sonicwall | sma_400_firmware | < 10.2.1.14-75sv | cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:* |
| sonicwall | sma_410_firmware | < 10.2.1.14-75sv | cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:* |
| sonicwall | sma_500v_firmware | < 10.2.1.14-75sv | cpe:2.3:o:sonicwall:sma_500v_firmware:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://httpd.apache.org/security/vulnerabilities_24.html | Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20240712-0001/ | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2024/07/01/8 | Third Party Advisory |
| https://github.com/apache/httpd/commit/9a6157d1e2f7ab15963020381054b48782bc18cf | Patch |
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0018 | Third Party Advisory |
| https://www.blackhat.com/us-24/briefings/schedule/index.html#confusion-attacks-exploiting-hidden-semantic-ambiguity-in-apache-http-server-pre-recorded-40227 | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-38475 | Third Party Advisory US Government Resource |