GSD-2021-23999

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Aliases
Aliases
CVE-2021-23999
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-23999",
    "description": "If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR \u003c 78.10, Thunderbird \u003c 78.10, and Firefox \u003c 88.",
    "id": "GSD-2021-23999",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-23999.html",
      "https://www.debian.org/security/2021/dsa-4897",
      "https://www.debian.org/security/2021/dsa-4895",
      "https://access.redhat.com/errata/RHSA-2021:1363",
      "https://access.redhat.com/errata/RHSA-2021:1362",
      "https://access.redhat.com/errata/RHSA-2021:1361",
      "https://access.redhat.com/errata/RHSA-2021:1360",
      "https://access.redhat.com/errata/RHSA-2021:1353",
      "https://access.redhat.com/errata/RHSA-2021:1352",
      "https://access.redhat.com/errata/RHSA-2021:1351",
      "https://access.redhat.com/errata/RHSA-2021:1350",
      "https://ubuntu.com/security/CVE-2021-23999",
      "https://advisories.mageia.org/CVE-2021-23999.html",
      "https://security.archlinux.org/CVE-2021-23999",
      "https://linux.oracle.com/cve/CVE-2021-23999.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-23999"
      ],
      "details": "If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR \u003c 78.10, Thunderbird \u003c 78.10, and Firefox \u003c 88.",
      "id": "GSD-2021-23999",
      "modified": "2023-12-13T01:23:29.749723Z",
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    }
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-04-26T15:31Z",
      "publishedDate": "2021-06-24T14:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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