rustsec-2024-0332
Vulnerability from osv_rustsec
Published
2024-04-03 12:00
Modified
2024-04-11 16:16
Summary
Degradation of service in h2 servers with CONTINUATION Flood
Details

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage.

Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency.

More details at "https://seanmonstar.com/blog/hyper-http2-continuation-flood/.

Patches available for 0.4.x and 0.3.x versions.

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "h2",
        "purl": "pkg:cargo/h2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.26"
            },
            {
              "introduced": "0.4.0-0"
            },
            {
              "fixed": "0.4.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-q6cp-qfwq-4gcv"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "An attacker can send a flood of CONTINUATION frames, causing `h2` to process them indefinitely.\nThis results in an increase in CPU usage.\n\nTokio task budget helps prevent this from a complete denial-of-service, as the server can still\nrespond to legitimate requests, albeit with increased latency.\n\nMore details at \"https://seanmonstar.com/blog/hyper-http2-continuation-flood/.\n\nPatches available for 0.4.x and 0.3.x versions.",
  "id": "RUSTSEC-2024-0332",
  "modified": "2024-04-11T16:16:20Z",
  "published": "2024-04-03T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/h2"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0332.html"
    },
    {
      "type": "WEB",
      "url": "https://seanmonstar.com/blog/hyper-http2-continuation-flood/"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Degradation of service in h2 servers with CONTINUATION Flood"
}


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