RUSTSEC-2024-0336 (CVE-2024-32650)

Vulnerability from osv_rustsec – Published: 2024-04-19 12:00 – Updated: 2026-10-12 17:47 – Source website
VLAI
Summary
`rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input
Details

If a close_notify alert is received during a handshake, complete_io does not terminate.

Callers which do not call complete_io are not affected.

rustls-tokio and rustls-ffi do not call complete_io and are not affected.

rustls::Stream and rustls::StreamOwned types use complete_io and are affected.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "rustls::ConnectionCommon::complete_io"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "rustls",
        "purl": "pkg:cargo/rustls"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.21.11"
            },
            {
              "introduced": "0.22.0"
            },
            {
              "fixed": "0.22.4"
            },
            {
              "introduced": "0.23.0"
            },
            {
              "fixed": "0.23.5"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2024-32650",
    "GHSA-6g7w-8wpp-frhj"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "If a `close_notify` alert is received during a handshake, `complete_io`\ndoes not terminate.\n\nCallers which do not call `complete_io` are not affected.\n\n`rustls-tokio` and `rustls-ffi` do not call `complete_io`\nand are not affected.\n\n`rustls::Stream` and `rustls::StreamOwned` types use\n`complete_io` and are affected.",
  "id": "RUSTSEC-2024-0336",
  "modified": "2026-10-12T17:47:59Z",
  "published": "2024-04-19T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/rustls"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0336.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rustls/rustls/commit/2123576840aa31043a31b0770e6572136fbe0c2d"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "`rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input"
}



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