Vulnerability-Lookup

GHSA-HF5H-HH56-3VRG

Vulnerability from github – Published: 2020-09-01 16:02 – Updated: 2020-08-31 18:12

Summary

Denial of Service in uws

Details

Affected versions of uws do not properly handle large websocket messages when permessage-deflate is enabled, which may result in a denial of service condition.

If uws recieves a 256Mb websocket message when permessage-deflate is enabled, the server will compress the message prior to executing the length check, and subsequently extract the message prior to processing. This can result in a situation where an excessively large websocket message passes the length checks, yet still gets cast from a Buffer to a string, which will exceed v8's maximum string size and crash the process.

Recommendation

Update to version 0.10.9 or later.

Alternatively, disable permessage-deflate.

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.10.8"
      },
      "package": {
        "ecosystem": "npm",
        "name": "uws"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.10.0"
            },
            {
              "fixed": "0.10.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2016-10544"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T18:12:32Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Affected versions of `uws` do not properly handle large websocket messages when `permessage-deflate` is enabled, which may result in a denial of service condition.\n\nIf `uws` recieves a 256Mb websocket message when `permessage-deflate` is enabled, the server will compress the message prior to executing the length check, and subsequently extract the message prior to processing. This can result in a situation where an excessively large websocket message passes the length checks, yet still gets cast from a Buffer to a string, which will exceed v8\u0027s maximum string size and crash the process.\n\n\n## Recommendation\n\nUpdate to version 0.10.9 or later.\n\nAlternatively, disable `permessage-deflate`.",
  "id": "GHSA-hf5h-hh56-3vrg",
  "modified": "2020-08-31T18:12:32Z",
  "published": "2020-09-01T16:02:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-10544"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uWebSockets/uWebSockets/commit/37deefd01f0875e133ea967122e3a5e421b8fcd9"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/149"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Denial of Service in uws"
}

CVE-2016-10544 (GCVE-0-2016-10544)

Vulnerability from cvelistv5 – Published: 2018-05-31 20:00 – Updated: 2024-09-17 02:56

Summary

uws is a WebSocket server library. By sending a 256mb websocket message to a uws server instance with permessage-deflate enabled, there is a possibility used compression will shrink said 256mb down to less than 16mb of websocket payload which passes the length check of 16mb payload. This data will then inflate up to 256mb and crash the node process by exceeding V8's maximum string size. This affects uws >=0.10.0 <=0.10.8.

Severity

No CVSS data available.

CWE

CWE-400 - Denial of Service (CWE-400)

Assigner

hackerone mitre root Scorecard

References

2 references

URL	Tags
https://github.com/uWebSockets/uWebSockets/commit…	x_refsource_MISC
https://nodesecurity.io/advisories/149	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
HackerOne	uws node module	Affected: >=0.10.0 <=0.10.8

Date Public

2018-04-26 00:00

Show details on NVD website

JSON

To clipboard

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            "url": "https://github.com/uWebSockets/uWebSockets/commit/37deefd01f0875e133ea967122e3a5e421b8fcd9"
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    ],
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      ],
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  "cveMetadata": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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