Vulnerability-Lookup

UBUNTU-CVE-2024-32650 (CVE-2024-32650)

Vulnerability from osv_ubuntu – Published: 2024-04-19 16:15 – Updated: 2026-05-20 15:09 – Source website

Details

Rustls is a modern TLS library written in Rust. rustls::ConnectionCommon::complete_io could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a close_notify message immediately after client_hello, the server's complete_io will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2024-32650	REPORT
	https://www.cve.org/CVERecord?id=CVE-2024-32650	REPORT
	https://github.com/rustls/rustls/security/advisor…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "librust-rustls-dev",
            "binary_version": "0.21.10-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "rust-rustls",
        "purl": "pkg:deb/ubuntu/rust-rustls@0.21.10-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.21.6-3",
        "0.21.7-1",
        "0.21.9-1",
        "0.21.10-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "librust-rustls-dev",
            "binary_version": "0.23.26+ds-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "rust-rustls",
        "purl": "pkg:deb/ubuntu/rust-rustls@0.23.26+ds-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.23.25+ds-1",
        "0.23.26+ds-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "librust-rustls-dev",
            "binary_version": "0.23.36+ds-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "rust-rustls",
        "purl": "pkg:deb/ubuntu/rust-rustls@0.23.36+ds-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.23.26+ds-1",
        "0.23.33+ds-3build2",
        "0.23.35+ds-1",
        "0.23.35+ds-1build1",
        "0.23.36+ds-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server\u0027s `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.",
  "id": "UBUNTU-CVE-2024-32650",
  "modified": "2026-05-20T15:09:01Z",
  "published": "2024-04-19T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-32650"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-32650"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rustls/rustls/security/advisories/GHSA-6g7w-8wpp-frhj"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2024-32650"
  ]
}

CVE-2024-32650 (GCVE-0-2024-32650)

Vulnerability from cvelistv5 – Published: 2024-04-19 16:05 – Updated: 2024-08-02 02:13

Title

Rustls vulnerable to an infinite loop in rustls::conn::ConnectionCommon::complete_io() with proper client input

Summary

Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server's `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-22 15:34 UTC

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/rustls/rustls/security/advisor…	x_refsource_CONFIRM
https://github.com/rustls/rustls/commit/212357684…	x_refsource_MISC
https://github.com/rustls/rustls/commit/6e938bcfe…	x_refsource_MISC
https://github.com/rustls/rustls/commit/f45664fbd…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
rustls	rustls	Affected: >= 0.23.0, < 0.23.5 Affected: >= 0.22.0, < 0.22.4 Affected: >= 0.21.0, < 0.21.11 Affected: = 0.20.0
rustls_project	rustls	Unknown: 0.21.11 cpe:2.3:a:rustls_project:rustls::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:rustls_project:rustls:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "rustls",
            "vendor": "rustls_project",
            "versions": [
              {
                "status": "unknown",
                "version": "0.21.11"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-32650",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-22T15:34:25.994212Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:49:50.274Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T02:13:40.195Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/rustls/rustls/security/advisories/GHSA-6g7w-8wpp-frhj",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/rustls/rustls/security/advisories/GHSA-6g7w-8wpp-frhj"
          },
          {
            "name": "https://github.com/rustls/rustls/commit/2123576840aa31043a31b0770e6572136fbe0c2d",
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              "x_transferred"
            ],
            "url": "https://github.com/rustls/rustls/commit/2123576840aa31043a31b0770e6572136fbe0c2d"
          },
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            "url": "https://github.com/rustls/rustls/commit/6e938bcfe82a9da7a2e1cbf10b928c7eca26426e"
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            "name": "https://github.com/rustls/rustls/commit/f45664fbded03d833dffd806503d3c8becd1b71e",
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            ],
            "url": "https://github.com/rustls/rustls/commit/f45664fbded03d833dffd806503d3c8becd1b71e"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "rustls",
          "vendor": "rustls",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.23.0, \u003c 0.23.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.22.0, \u003c 0.22.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.21.0, \u003c 0.21.11"
            },
            {
              "status": "affected",
              "version": "= 0.20.0"
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          ]
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server\u0027s `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
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            }
          ]
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      ],
      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
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          "tags": [
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          "url": "https://github.com/rustls/rustls/commit/2123576840aa31043a31b0770e6572136fbe0c2d"
        },
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          "tags": [
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          ],
          "url": "https://github.com/rustls/rustls/commit/6e938bcfe82a9da7a2e1cbf10b928c7eca26426e"
        },
        {
          "name": "https://github.com/rustls/rustls/commit/f45664fbded03d833dffd806503d3c8becd1b71e",
          "tags": [
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          ],
          "url": "https://github.com/rustls/rustls/commit/f45664fbded03d833dffd806503d3c8becd1b71e"
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      "source": {
        "advisory": "GHSA-6g7w-8wpp-frhj",
        "discovery": "UNKNOWN"
      },
      "title": "Rustls vulnerable to an infinite loop in rustls::conn::ConnectionCommon::complete_io() with proper client input"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-32650",
    "datePublished": "2024-04-19T16:05:44.050Z",
    "dateReserved": "2024-04-16T14:15:26.876Z",
    "dateUpdated": "2024-08-02T02:13:40.195Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.