{
  "id": "CVE-2023-32731",
  "sourceIdentifier": "cve-coordination@google.com",
  "published": "2023-06-09T11:15:09.303",
  "lastModified": "2023-06-15T22:18:49.193",
  "vulnStatus": "Analyzed",
  "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"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      },
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        "source": "cve-coordination@google.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.4,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    },
    {
      "source": "cve-coordination@google.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-440"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.53.0",
              "versionEndExcluding": "1.55.0",
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  "references": [
    {
      "url": "https://github.com/grpc/grpc/pull/32309",
      "source": "cve-coordination@google.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/grpc/grpc/pull/33005",
      "source": "cve-coordination@google.com",
      "tags": [
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  ]
}