When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out. Users are recommended to upgrade to version 2.4.58, which fixes the issue.
総合評価: CVE-2023-45802 は中リスク（55.2/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 3.02%、86 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.56% 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 | 1.46% | 3.02% | +1.56% |
| 2 | 2026-06-14 | 1.82% | 1.46% | -0.36% |
| 3 | 2026-06-12 | — | 1.82% | — |
EPSS の全履歴 （全 63 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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-45802: 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-2023-45802 |
debian
|
not yet assigned | CVE-2023-45802 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-2023-45802 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-45802 |
suse
|
high | CVE-2023-45802 severity important: SUSE including 299 source package names (4.3.13.9.57.60:apache2-2.4.51-150400.6.43.1, 4.3.13.9.57.60:apache2-prefork-2.4.51-150400.6.43.1, …), 513 product×package rows across 67 product lines (Container suse/manager/4.3/proxy-httpd, Image SLES15-SP3-SAPCAL-Azure, … (67 product lines)): Fixed 243, Known Affected 231, Will Not Fix 37, Known Not Affected 2. | https://www.suse.com/security/cve/CVE-2023-45802/ |
ubuntu
|
medium | CVE-2023-45802 medium priority: Ubuntu including 1 source packages (apache2), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 9, not-affected 2, needs-triage 1. | https://ubuntu.com/security/CVE-2023-45802 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | >= 2.4.17, < 2.4.58 | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| fedoraproject | fedora | 38 | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
| fedoraproject | fedora | 39 | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://httpd.apache.org/security/vulnerabilities_24.html | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20231027-0011/ | Third Party Advisory |