rustsec-2024-0399
Vulnerability from osv_rustsec
Published
2024-11-22 12:00
Modified
2025-10-28 06:02
Summary
rustls network-reachable panic in `Acceptor::accept`
Details

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use rustls::server::Acceptor::accept() are affected.

Servers that use tokio-rustls's LazyConfigAcceptor API are affected.

Servers that use tokio-rustls's TlsAcceptor API are not affected.

Servers that use rustls-ffi's rustls_acceptor_accept API are affected.

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": "rustls",
        "purl": "pkg:cargo/rustls"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.23.0"
            },
            {
              "fixed": "0.23.0"
            },
            {
              "introduced": "0.23.13"
            },
            {
              "fixed": "0.23.18"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2024-11738",
    "GHSA-qg5g-gv98-5ffh"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "A bug introduced in rustls 0.23.13 leads to a panic if the received\nTLS ClientHello is fragmented.  Only servers that use\n`rustls::server::Acceptor::accept()` are affected.\n\nServers that use `tokio-rustls`\u0027s `LazyConfigAcceptor` API are affected.\n\nServers that use `tokio-rustls`\u0027s `TlsAcceptor` API are not affected.\n\nServers that use `rustls-ffi`\u0027s `rustls_acceptor_accept` API are affected.",
  "id": "RUSTSEC-2024-0399",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2024-11-22T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/rustls"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0399.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rustls/rustls/issues/2227"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "rustls network-reachable panic in `Acceptor::accept`"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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