CVE-2016-10544: Uws Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-hf5h-hh56-3vrg
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CWE-400
Published
Advisory Summary

CVE-2016-10544 is a HIGH denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Uws libraries in the npm ecosystem. The issue involves denial of service in uws. Remediation is available by upgrading affected packages to version 0.10.9.

CVE-2016-10544 at a Glance

CVE Identifier CVE-2016-10544
GHSA Identifier GHSA-hf5h-hh56-3vrg
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Uws
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2016-10544

To remediate this vulnerability, upgrade all affected Uws dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

uws fixed: 0.10.9 
npm install uws@0.10.9
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls uws

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2016-10544, inspect your project dependencies using npm:

npm ls uws

Analyze the terminal output to locate any version of Uws in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.10.9), your application is affected.

Note: The npm ls uws command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Uws, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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`.

CVE-2016-10544 Affected Uws Versions

1 component(s)
Fixed Versions:
0.10.9
Product / Package Ecosystem Affected Versions Fixed Version
uws
npm/uws
npm
≥ 0.10.0
< 0.10.9
0.10.9

References

NVD — CVE-2016-10544 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-10544
Security Fix Commit FIX COMMIT
https://github.com/uWebSockets/uWebSockets/commit/37deefd01f0875e133ea967122e3a5e421b8fcd9
www.npmjs.com/advisories/149 WEB
https://www.npmjs.com/advisories/149

Frequently Asked Questions

What is CVE-2016-10544?
CVE-2016-10544 is a security vulnerability in Uws involving Denial of Service in uws under CWE-400: Uncontrolled Resource Consumption.
Which Uws versions are affected?
Affected versions include releases prior to 0.10.9 across affected packages: uws.
What version fixes CVE-2016-10544?
Upgrading to 0.10.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is uws affected?
Yes, uws is affected in releases prior to 0.10.9. Upgrade your dependency to 0.10.9 or later.
What CWE is associated with CVE-2016-10544?
CVE-2016-10544 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2016-10544?
Run the dependency tree command: 'npm ls uws'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hf5h-hh56-3vrg",
  "modified" : "2020-08-31T18:12:32Z",
  "published" : "2020-09-01T16:02:29Z",
  "aliases" : [ "CVE-2016-10544" ],
  "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.\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's 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`.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "uws"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.10.0"
      }, {
        "fixed" : "0.10.9"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.10.8"
    }
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:12:32Z",
    "nvd_published_at" : null
  }
}