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CVE-2023-24535

Status: ModifiedHigh (7.5)—

Parsing invalid messages can panic. Parsing a text-format message which contains a potential number consisting of a minus sign, one or more characters of whitespace, and no further input will cause a panic.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Protobuf — Protobuf

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2023-24535",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-24535",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-01-06T19:32:44.668183Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@golang.org",
      "affectedData": [
        {
          "vendor": "google.golang.org/protobuf",
          "product": "google.golang.org/protobuf/encoding/prototext",
          "versions": [
            {
              "status": "affected",
              "version": "1.29.0",
              "lessThan": "1.29.1",
              "versionType": "semver"
            }
          ],
          "packageName": "google.golang.org/protobuf/encoding/prototext",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "UnmarshalOptions.unmarshal"
            },
            {
              "name": "Unmarshal"
            },
            {
              "name": "UnmarshalOptions.Unmarshal"
            }
          ]
        },
        {
          "vendor": "google.golang.org/protobuf",
          "product": "google.golang.org/protobuf/internal/encoding/text",
          "versions": [
            {
              "status": "affected",
              "version": "1.29.0",
              "lessThan": "1.29.1",
              "versionType": "semver"
            }
          ],
          "packageName": "google.golang.org/protobuf/internal/encoding/text",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "parseNumber"
            },
            {
              "name": "Decoder.Peek"
            },
            {
              "name": "Decoder.Read"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-06-08T21:15:16.420",
  "references": [
    {
      "url": "https://github.com/golang/protobuf/issues/1530",
      "tags": [
        "Issue Tracking"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://go.dev/cl/475995",
      "tags": [
        "Patch"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://pkg.go.dev/vuln/GO-2023-1631",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://github.com/golang/protobuf/issues/1530",
      "tags": [
        "Issue Tracking"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://go.dev/cl/475995",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://pkg.go.dev/vuln/GO-2023-1631",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Parsing invalid messages can panic. Parsing a text-format message which contains a potential number consisting of a minus sign, one or more characters of whitespace, and no further input will cause a panic."
    }
  ],
  "lastModified": "2026-06-17T05:39:29.100",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:protobuf:protobuf:1.29.0:*:*:*:*:go:*:*",
              "vulnerable": true,
              "matchCriteriaId": "573408EB-0BFD-4081-8878-BDECA46E6530"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@golang.org"
}