{
  "id": "CVE-2023-38700",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-08-04T19:15:09.697",
  "lastModified": "2023-08-11T18:58:44.057",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it was possible to craft an event such that it would leak part of a targeted message event from another bridged room. This required knowing an event ID to target. Version 1.0.1n fixes this issue. As a workaround, set the `matrixHandler.eventCacheSize` config value to `0`. This workaround may impact performance."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 3.7,
          "baseSeverity": "LOW"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4
      },
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 3.5,
          "baseSeverity": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    },
    {
      "source": "security-advisories@github.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:matrix:matrix_irc_bridge:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "1.0.1",
              "matchCriteriaId": "5E1ADA6C-5E11-43D2-B9D7-8357036D8621"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/matrix-org/matrix-appservice-irc/commit/8bbd2b69a16cbcbeffdd9b5c973fd89d61498d75",
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1",
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-c7hh-3v6c-fj4q",
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}