Vulnerability-Lookup

CVE-2023-32732 (GCVE-0-2023-32732)

Vulnerability from cvelistv5 – Published: 2023-06-09 10:48 – Updated: 2025-02-13 16:55

Title

Denial-of-Service in gRPC

Summary

gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-26 18:59 UTC

CWE

CWE-440 - Expected Behavior Violation

Assigner

Google CNA under the Google root

CNA scorecard C 75/100 over 33 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/grpc/grpc/pull/32309
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Impacted products

2 products

Vendor	Product	Version	CPE status
Google	gRPC	Affected: 1.53 , < 1.54 (custom)	guessed
grpc	grpc	Affected: 1.53 , < 1.54 (custom) cpe:2.3:a:grpc:grpc::::::::

Show details on NVD website

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                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
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                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-440",
                  "description": "CWE-440: Expected Behavior Violation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-07-23T02:06:09.201Z",
            "orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
            "shortName": "Google"
          },
          "references": [
            {
              "url": "https://github.com/grpc/grpc/pull/32309"
            },
            {
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/37IDNVY5AWVH7JDMM2SDTL24ZPPZJNSY/"
            },
            {
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VWE44J5FG7THHL7XVEVTNIGEYBNKJBLL/"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Fixes available in these releases:\u003cbr\u003e- 1.52.2: \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/grpc/grpc/releases/tag/v1.52.2\"\u003ehttps://github.com/grpc/grpc/releases/tag/v1.52.2\u003c/a\u003e\u003cbr\u003e- 1.53.1: \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/grpc/grpc/releases/tag/v1.53.1\"\u003ehttps://github.com/grpc/grpc/releases/tag/v1.53.1\u003c/a\u003e\u003cbr\u003e- 1.54.2: \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/grpc/grpc/releases/tag/v1.54.2\"\u003ehttps://github.com/grpc/grpc/releases/tag/v1.54.2\u003c/a\u003e\u003cbr\u003e- 1.55.0: \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/grpc/grpc/releases/tag/v1.55.0\"\u003ehttps://github.com/grpc/grpc/releases/tag/v1.55.0\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e"
                }
              ],
              "value": "Fixes available in these releases:\n- 1.52.2:  https://github.com/grpc/grpc/releases/tag/v1.52.2 https://github.com/grpc/grpc/releases/tag/v1.52.2 \n- 1.53.1:  https://github.com/grpc/grpc/releases/tag/v1.53.1 https://github.com/grpc/grpc/releases/tag/v1.53.1 \n- 1.54.2:  https://github.com/grpc/grpc/releases/tag/v1.54.2 https://github.com/grpc/grpc/releases/tag/v1.54.2 \n- 1.55.0:  https://github.com/grpc/grpc/releases/tag/v1.55.0 https://github.com/grpc/grpc/releases/tag/v1.55.0"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Denial-of-Service in gRPC",
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            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "assignerShortName": "Google",
        "cveId": "CVE-2023-32732",
        "datePublished": "2023-06-09T10:48:15.075Z",
        "dateReserved": "2023-05-12T08:58:54.033Z",
        "dateUpdated": "2025-02-13T16:55:01.392Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

SUSE-SU-2024:0573-1

Vulnerability from csaf_suse - Published: 2024-02-21 08:37 - Updated: 2024-02-21 08:37

Summary

Security update for abseil-cpp, grpc, opencensus-proto, protobuf, python-abseil, python-grpcio, re2

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2023-32732.

CVE-2023-32732

5.3 (Medium)


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

Recommended: 322 products

Open the full advisory

UBUNTU-CVE-2023-32732 (CVE-2023-32732)

Vulnerability from osv_ubuntu – Published: 2023-06-09 11:15 – Updated: 2026-05-20 15:02 – Source website

Details

gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for -bin suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url

Severity

5.3 (Medium)


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

5.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-32732	REPORT
	https://github.com/grpc/grpc/pull/32309	REPORT
	https://github.com/grpc/grpc/releases/tag/v1.54.2	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-32732	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc0",
            "binary_version": "0.11.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@0.11.1-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.2-1",
        "0.11.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1",
            "binary_version": "1.3.2-1.1~build1"
          },
          {
            "binary_name": "libgrpc3",
            "binary_version": "1.3.2-1.1~build1"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.3.2-1.1~build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.3.2-1.1~build1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-1",
        "1.3.2-1ubuntu1",
        "1.3.2-1.1~build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1",
            "binary_version": "1.16.1-1ubuntu5"
          },
          {
            "binary_name": "libgrpc6",
            "binary_version": "1.16.1-1ubuntu5"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.16.1-1ubuntu5"
          },
          {
            "binary_name": "python3-grpcio",
            "binary_version": "1.16.1-1ubuntu5"
          },
          {
            "binary_name": "ruby-grpc",
            "binary_version": "1.16.1-1ubuntu5"
          },
          {
            "binary_name": "ruby-grpc-tools",
            "binary_version": "1.16.1-1ubuntu5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.16.1-1ubuntu5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.16.1-1",
        "1.16.1-1ubuntu1",
        "1.16.1-1ubuntu3",
        "1.16.1-1ubuntu4",
        "1.16.1-1ubuntu5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1",
            "binary_version": "1.30.2-3build6"
          },
          {
            "binary_name": "libgrpc10",
            "binary_version": "1.30.2-3build6"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.30.2-3build6"
          },
          {
            "binary_name": "python3-grpcio",
            "binary_version": "1.30.2-3build6"
          },
          {
            "binary_name": "ruby-grpc",
            "binary_version": "1.30.2-3build6"
          },
          {
            "binary_name": "ruby-grpc-tools",
            "binary_version": "1.30.2-3build6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.30.2-3build6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.30.2-3",
        "1.30.2-3build1",
        "1.30.2-3build3",
        "1.30.2-3build5",
        "1.30.2-3build6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1.51t64",
            "binary_version": "1.51.1-4.1build5"
          },
          {
            "binary_name": "libgrpc29t64",
            "binary_version": "1.51.1-4.1build5"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.51.1-4.1build5"
          },
          {
            "binary_name": "python3-grpcio",
            "binary_version": "1.51.1-4.1build5"
          },
          {
            "binary_name": "ruby-grpc",
            "binary_version": "1.51.1-4.1build5"
          },
          {
            "binary_name": "ruby-grpc-tools",
            "binary_version": "1.51.1-4.1build5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.51.1-4.1build5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.51.1-3build3",
        "1.51.1-3build4",
        "1.51.1-4",
        "1.51.1-4build1",
        "1.51.1-4build2",
        "1.51.1-4.1build3",
        "1.51.1-4.1build4",
        "1.51.1-4.1build5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1.51t64",
            "binary_version": "1.51.1-6build1"
          },
          {
            "binary_name": "libgrpc29t64",
            "binary_version": "1.51.1-6build1"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.51.1-6build1"
          },
          {
            "binary_name": "python3-grpcio",
            "binary_version": "1.51.1-6build1"
          },
          {
            "binary_name": "ruby-grpc",
            "binary_version": "1.51.1-6build1"
          },
          {
            "binary_name": "ruby-grpc-tools",
            "binary_version": "1.51.1-6build1"
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      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.51.1-6build1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
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      "versions": [
        "1.51.1-6",
        "1.51.1-6build1"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgrpc++1.51t64",
            "binary_version": "1.51.1-8ubuntu1"
          },
          {
            "binary_name": "libgrpc29t64",
            "binary_version": "1.51.1-8ubuntu1"
          },
          {
            "binary_name": "protobuf-compiler-grpc",
            "binary_version": "1.51.1-8ubuntu1"
          },
          {
            "binary_name": "python3-grpcio",
            "binary_version": "1.51.1-8ubuntu1"
          },
          {
            "binary_name": "ruby-grpc",
            "binary_version": "1.51.1-8ubuntu1"
          },
          {
            "binary_name": "ruby-grpc-tools",
            "binary_version": "1.51.1-8ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "grpc",
        "purl": "pkg:deb/ubuntu/grpc@1.51.1-8ubuntu1?arch=source\u0026distro=resolute"
      },
      "ranges": [
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          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.51.1-6build1",
        "1.51.1-7",
        "1.51.1-7ubuntu2",
        "1.51.1-7ubuntu3",
        "1.51.1-8ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in\u00a0 https://github.com/grpc/grpc/pull/32309 https://www.google.com/url",
  "id": "UBUNTU-CVE-2023-32732",
  "modified": "2026-05-20T15:02:41Z",
  "published": "2023-06-09T11:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-32732"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/grpc/grpc/pull/32309"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/grpc/grpc/releases/tag/v1.54.2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-32732"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-32732"
  ]
}

VDE-2024-073

Vulnerability from csaf_phoenixcontactgmbhcokg - Published: 2024-12-09 11:00 - Updated: 2025-05-22 13:03

Summary

Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware

Severity

Critical

Scope

63 vulnerabilities in this advisory, including CVE-2023-32732.

CVE-2023-32732

gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for '-bin' suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url

5.3 (Medium)


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

Fixed: 8 products Known affected: 8 products

Open the full advisory

WID-SEC-W-2024-1591

Vulnerability from csaf_certbund - Published: 2024-07-10 22:00 - Updated: 2024-11-11 23:00

Summary

Juniper JUNOS: Mehrere Schwachstellen

Severity

Mittel

Scope

281 vulnerabilities in this advisory, including CVE-2023-32732.

CVE-2023-32732

Es existieren mehrere Schwachstellen in verschiedenen Juniper-Produkten. Ursachen sind unter Anderem Ungenügende Eingabeüberprüfungen, Unsachgemäße Überprüfung und Verarbeitung von Paketen, fehlende Speicherfreigaben, fehlerhafte Behandlung von Ausnahmen, Unsachgemäße Speicherbehandlung, unkontrollierter Ressourcenverbrauch, Klartextspeicherung von Daten und Pufferüberläufe. Diese Schwachstellen ermöglichen Angreifern Denial of Service Zustände zu verursachen, Informationen offenzulegen, Code auszuführen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive der Firewall Funktionalität zu umgehen. Zu einer erfolgreichen Ausnutzung einiger dieser Schwachstellen ist eine Anmeldung oder eine Interaktion des Nutzers notwendig.

Known affected: 1 product

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

Action not permitted

CVE-2023-32732 (GCVE-0-2023-32732)

SUSE-SU-2024:0573-1

UBUNTU-CVE-2023-32732 (CVE-2023-32732)

VDE-2024-073

WID-SEC-W-2024-1591

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour