ghsa-349h-phx6-ghfj
Vulnerability from github
Published
2022-05-24 17:43
Modified
2022-08-16 00:00
Details

A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-20263"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-281"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-09T18:15:00Z",
    "severity": "LOW"
  },
  "details": "A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new \u0027xattrmap\u0027 option may cause the \u0027security.capability\u0027 xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.",
  "id": "GHSA-349h-phx6-ghfj",
  "modified": "2022-08-16T00:00:44Z",
  "published": "2022-05-24T17:43:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20263"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933668"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-27"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210507-0002"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2021/03/08/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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