CVE-2023-42453
Vulnerability from cvelistv5
Published
2023-09-26 20:49
Modified
2024-08-02 19:23
Summary
Improper validation of receipts allows forged read receipts in matrix synapse
Impacted products
Vendor Product Version
Show details on NVD website


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          "dateUpdated": "2024-08-02T19:23:38.904Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x"
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          {
            "name": "https://github.com/matrix-org/synapse/pull/16327",
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            "url": "https://github.com/matrix-org/synapse/pull/16327"
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            "url": "https://security.gentoo.org/glsa/202401-12"
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        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "product": "synapse",
          "vendor": "matrix-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.34.0, \u003c 1.93.0"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue."
        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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          "descriptions": [
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              "description": "CWE-285: Improper Authorization",
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      "source": {
        "advisory": "GHSA-7565-cq32-vx2x",
        "discovery": "UNKNOWN"
      },
      "title": "Improper validation of receipts allows forged read receipts in matrix synapse "
    }
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-42453",
    "datePublished": "2023-09-26T20:49:23.365Z",
    "dateReserved": "2023-09-08T20:57:45.573Z",
    "dateUpdated": "2024-08-02T19:23:38.904Z",
    "state": "PUBLISHED"
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  }
}


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