{
"id": "GHSA-52mq-6jcv-j79x",
"aliases": [
"CVE-2021-21320"
],
"details": "### Impact\n\nThe user content sandbox can be abused to trick users into opening unexpected documents after several user interactions. The content can be opened with a `blob` origin from the Matrix client, so it is possible for a malicious document to access user messages and secrets.\n\n### Patches\n\nThis has been fixed by https://github.com/matrix-org/matrix-react-sdk/pull/5657, which is included in 3.15.0.\n\n### Workarounds\n\nThere are no known workarounds.",
"summary": "User content sandbox can be confused into opening arbitrary documents",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.15.0"
}
]
}
],
"package": {
"name": "matrix-react-sdk",
"ecosystem": "npm"
}
}
],
"modified": "2021-04-14T19:07:25Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N"
}
],
"published": "2021-03-03T02:23:56Z",
"references": [
{
"url": "https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-52mq-6jcv-j79x",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21320",
"type": "ADVISORY"
},
{
"url": "https://github.com/matrix-org/matrix-react-sdk/pull/5657",
"type": "WEB"
},
{
"url": "https://github.com/matrix-org/matrix-react-sdk/commit/b386f0c73b95ecbb6ea7f8f79c6ff5171a8dedd1",
"type": "WEB"
},
{
"url": "https://www.npmjs.com/package/matrix-react-sdk",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-345"
],
"severity": "LOW",
"github_reviewed": true,
"nvd_published_at": "2021-03-02T03:15:00Z",
"github_reviewed_at": "2021-03-02T02:47:04Z"
}
}