A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability.
総合評価: CVE-2018-1303 は高リスク(66.3/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 34.55%、97 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 +2.29% 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 | 2026-05-26 | 32.25% | 34.55% | +2.29% |
| 2 | 2026-04-25 | 40.14% | 32.25% | -7.89% |
| 3 | 2026-03-08 | — | 40.14% | — |
EPSS の全履歴 (全 55 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 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2018-1303: 1 source package rows (apache2); 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-2018-1303 |
debian
|
not yet assigned | CVE-2018-1303 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-2018-1303 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-1303 |
suse
|
high | CVE-2018-1303 severity important: SUSE including 47 source package names (apache2, apache2-2.4.10-14.31.1, …), 119 product×package rows across 25 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise High Performance Computing 12 SP5, … (25 product lines)): Fixed 101, Known Not Affected 18. | https://www.suse.com/security/cve/CVE-2018-1303/ |
ubuntu
|
low | CVE-2018-1303 low priority: Ubuntu including 1 source packages (apache2), 5 status rows across 5 suites (artful, bionic, trusty, upstream, xenial): released 5. | https://ubuntu.com/security/CVE-2018-1303 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | <= 2.4.29 | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| 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 | 17.10 | cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| netapp | santricity_cloud_connector | — | cpe:2.3:a:netapp:santricity_cloud_connector:-:*:*:*:*:*:*:* |
| netapp | storage_automation_store | — | cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* |
| netapp | storagegrid | — | cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:* |
| netapp | clustered_data_ontap | — | cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* |