| Summary | 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. |
|---|---|
| Publication Date | Oct. 23, 2023, 4:15 p.m. |
| Registration Date | Oct. 23, 2023, 8 p.m. |
| Last Update | Nov. 21, 2024, 5:27 p.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 5.9 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 高 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* | 2.4.17 | 2.4.58 | |||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* | |||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | |||||
| Title | Apache Software Foundation の Apache HTTP Server 他複数ベンダの製品におけるメモリ使用量を増大される脆弱性 |
|---|---|
| Summary | Apache Software Foundation の Apache HTTP Server 他複数ベンダの製品には、クライアントが新しいリクエストを送信してリセットする際、接続がビジー状態で開いたままとなるため、メモリ使用量を増大される脆弱性が存在します。 |
| Possible impacts | メモリ使用量を増大される可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | Oct. 19, 2023, midnight |
| Registration Date | Nov. 2, 2023, 12:31 p.m. |
| Last Update | May 16, 2025, 2:43 p.m. |
| Apache Software Foundation |
| Apache HTTP Server 2.4.58 未満 |
| 日立 |
| Cosminexus HTTP Server |
| uCosminexus Application Server |
| uCosminexus Application Server-R |
| uCosminexus Developer |
| uCosminexus Primary Server Base |
| uCosminexus Service Architect |
| uCosminexus Service Platform |
| Fedora Project |
| Fedora 38 |
| No | Changed Details | Date of change |
|---|---|---|
| 3 | [2024年08月19日] 参考情報：JVN (JVNVU#99084687) を追加 参考情報：ICS-CERT ADVISORY (ICSA-24-228-06) を追加 |
Aug. 19, 2024, 2:11 p.m. |
| 1 | [2023年11月02日] 掲載 |
Nov. 2, 2023, 12:31 p.m. |
| 2 | [2024年03月13日] 影響を受けるシステム：ベンダ情報の追加に伴い内容を更新 ベンダ情報：日立 (hitachi-sec-2024-114) を追加 |
March 13, 2024, 12:20 p.m. |
| 4 | [2025年05月16日] 参考情報：JVN (JVNVU#90702915) を追加 参考情報：ICS-CERT ADVISORY (ICSA-25-133-01) を追加 |
May 16, 2025, 2:10 p.m. |