Vulnerability-Lookup

CVE-2023-32731 (GCVE-0-2023-32731)

Vulnerability from cvelistv5 – Published: 2023-06-09 10:54 – Updated: 2024-09-26 19:12

Title

Information leak in gRPC

Summary

When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005

Severity

7.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-26 19:07 UTC

CWE

CWE-440 - Expected Behavior Violation

Assigner

Google Google root

References

2 references

URL	Tags
https://github.com/grpc/grpc/pull/32309
https://github.com/grpc/grpc/pull/33005

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::::::::

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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/grpc/grpc/pull/32309\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://github.com/grpc/grpc/pull/33005\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T15:25:37.017Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-32731\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-26T19:07:16.164767Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*\"], \"vendor\": \"grpc\", \"product\": \"grpc\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.53\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.54\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-26T19:12:00.443Z\"}}], \"cna\": {\"title\": \"Information leak in gRPC\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-220\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-220 Client-Server Protocol Manipulation\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/grpc\", \"vendor\": \"Google\", \"product\": \"gRPC\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.53\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"1.54\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"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 \\n\\n\", \"supportingMedia\": [{\"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\", \"base64\": false}]}], \"references\": [{\"url\": \"https://github.com/grpc/grpc/pull/32309\"}, {\"url\": \"https://github.com/grpc/grpc/pull/33005\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in\\u00a0 https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005 \\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in\u0026nbsp;\u003ca target=\\\"_blank\\\" rel=\\\"nofollow\\\" href=\\\"https://github.com/grpc/grpc/pull/33005\\\"\u003ehttps://github.com/grpc/grpc/pull/33005\u003c/a\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-440\", \"description\": \"CWE-440: Expected Behavior Violation\"}]}], \"providerMetadata\": {\"orgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"shortName\": \"Google\", \"dateUpdated\": \"2023-06-13T15:26:24.636Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-32731\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-09-26T19:12:06.245Z\", \"dateReserved\": \"2023-05-12T08:58:54.033Z\", \"assignerOrgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"datePublished\": \"2023-06-09T10:54:08.472Z\", \"assignerShortName\": \"Google\"}",
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  }
}

RHSA-2024:10761

Vulnerability from csaf_redhat - Published: 2024-12-03 16:21 - Updated: 2026-08-14 07:12

Summary

Red Hat Security Advisory: rhc-worker-playbook security update

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2023-32731.

CVE-2023-32731

A flaw was found in gRPC. This flaw allows a remote attacker to obtain sensitive information, caused by a flaw when the gRPC HTTP2 stack raised a header size exceeded error. By sending a specially crafted request, an attacker can obtain sensitive information, and use this information to launch further attacks against the affected system.

7.4 (High)


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

Fixed: 9 products

https://access.redhat.com/errata/RHSA-2024:10761

Open the full advisory

RHSA-2024_10761

Vulnerability from csaf_redhat - Published: 2024-12-03 16:21 - Updated: 2024-12-17 19:34

Summary

Red Hat Security Advisory: rhc-worker-playbook security update

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2023-32731.

CVE-2023-32731

7.4 (High)


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

Fixed: 9 products

https://access.redhat.com/errata/RHSA-2024:10761

Open the full advisory

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-2023-32731.

CVE-2023-32731

7.4 (High)


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

Recommended: 322 products

Open the full advisory

ubuntu-cve-2023-32731

Vulnerability from osv_ubuntu

Published

2023-06-09 11:15

Modified

2026-05-20 15:02

Summary

Details

Severity

7.4 (High)


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

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-32731	REPORT
	https://github.com/grpc/grpc/pull/32309	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-32731	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"
          }
        ]
      },
      "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"
        }
      ],
      "versions": [
        "1.51.1-6",
        "1.51.1-6build1"
      ]
    },
    {
      "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": [
        {
          "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": "When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005",
  "id": "UBUNTU-CVE-2023-32731",
  "modified": "2026-05-20T15:02:41Z",
  "published": "2023-06-09T11:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-32731"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/grpc/grpc/pull/32309"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-32731"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-32731"
  ]
}

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-2023-32731.

CVE-2023-32731

7.4 (High)


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

Fixed: 8 products Known affected: 8 products

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.

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.

Action not permitted

CVE-2023-32731 (GCVE-0-2023-32731)

RHSA-2024:10761

RHSA-2024_10761

SUSE-SU-2024:0573-1

ubuntu-cve-2023-32731

Vulnerability from osv_ubuntu

VDE-2024-073

Tags

Sightings

Nomenclature

Related by attack behaviour