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| purl | pkg:deb/debian/h2o@2.2.5%2Bdfsg2-6 |
| Next non-vulnerable version | None. |
| Latest non-vulnerable version | None. |
| Risk | 10.0 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-6y3x-kyj7-aaaf
Aliases: CVE-2023-44487 GHSA-qppj-fm5r-hxr3 VSV00013 |
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. |
Affected by 0 other vulnerabilities. Affected by 0 other vulnerabilities. Affected by 0 other vulnerabilities. Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-3gua-vux5-aaaq | Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both. |
CVE-2019-9512
GHSA-hgr8-6h9x-f7q9 |
| VCID-6y3x-kyj7-aaaf | The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. |
CVE-2023-44487
GHSA-qppj-fm5r-hxr3 VSV00013 |
| VCID-6ypc-78mx-aaac | Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both. |
CVE-2019-9514
GHSA-39qc-96h7-956f |
| VCID-kfap-b6t7-aaam | Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both. |
CVE-2019-9515
|
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2025-06-21T19:17:20.997359+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 36.1.3 |
| 2025-06-21T17:08:25.223645+00:00 | Debian Oval Importer | Fixing | VCID-6y3x-kyj7-aaaf | https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 | 36.1.3 |
| 2025-06-21T05:55:01.376518+00:00 | Debian Oval Importer | Fixing | VCID-3gua-vux5-aaaq | None | 36.1.3 |
| 2025-06-21T05:29:31.896052+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | None | 36.1.3 |
| 2025-06-21T02:20:22.895668+00:00 | Debian Oval Importer | Fixing | VCID-6ypc-78mx-aaac | None | 36.1.3 |
| 2025-06-20T22:07:43.648537+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | None | 36.1.3 |
| 2025-06-20T20:11:03.696822+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 36.1.3 |
| 2025-06-08T11:46:08.877491+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 36.1.0 |
| 2025-06-08T09:51:45.661239+00:00 | Debian Oval Importer | Fixing | VCID-6y3x-kyj7-aaaf | https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 | 36.1.0 |
| 2025-06-07T23:33:35.816224+00:00 | Debian Oval Importer | Fixing | VCID-3gua-vux5-aaaq | None | 36.1.0 |
| 2025-06-07T23:07:19.893793+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | None | 36.1.0 |
| 2025-06-07T19:44:11.233483+00:00 | Debian Oval Importer | Fixing | VCID-6ypc-78mx-aaac | None | 36.1.0 |
| 2025-06-05T14:09:26.924392+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 36.1.0 |
| 2025-04-12T21:10:16.204541+00:00 | Debian Oval Importer | Fixing | VCID-6ypc-78mx-aaac | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 36.0.0 |
| 2025-04-12T20:44:03.935498+00:00 | Debian Oval Importer | Fixing | VCID-3gua-vux5-aaaq | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 36.0.0 |
| 2025-04-12T17:31:01.171513+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 36.0.0 |
| 2025-04-08T08:23:58.041498+00:00 | Debian Oval Importer | Fixing | VCID-6y3x-kyj7-aaaf | https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 | 36.0.0 |
| 2025-04-07T22:05:36.664894+00:00 | Debian Oval Importer | Fixing | VCID-3gua-vux5-aaaq | None | 36.0.0 |
| 2025-04-07T21:39:24.505137+00:00 | Debian Oval Importer | Fixing | VCID-kfap-b6t7-aaam | None | 36.0.0 |
| 2025-04-07T18:21:59.029499+00:00 | Debian Oval Importer | Fixing | VCID-6ypc-78mx-aaac | None | 36.0.0 |
| 2025-04-05T07:40:14.453871+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 36.0.0 |
| 2025-04-04T00:46:05.069539+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | None | 36.0.0 |
| 2025-02-21T14:04:51.350668+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | None | 35.1.0 |
| 2025-02-21T14:04:34.526230+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 35.1.0 |
| 2024-11-24T03:12:27.171343+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 35.0.0 |
| 2024-10-11T00:38:48.178267+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 34.0.2 |
| 2024-09-20T05:17:15.498215+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 34.0.1 |
| 2024-04-26T05:24:47.064842+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 34.0.0rc4 |
| 2024-04-26T05:24:38.228780+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | None | 34.0.0rc4 |
| 2024-01-05T09:53:31.509708+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | https://security-tracker.debian.org/tracker/data/json | 34.0.0rc1 |
| 2024-01-05T09:53:25.794256+00:00 | Debian Importer | Affected by | VCID-6y3x-kyj7-aaaf | None | 34.0.0rc1 |