GSD-2021-23995

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Aliases
Aliases
CVE-2021-23995
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-23995",
    "description": "When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR \u003c 78.10, Thunderbird \u003c 78.10, and Firefox \u003c 88.",
    "id": "GSD-2021-23995",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-23995.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-2021-23995",
      "https://advisories.mageia.org/CVE-2021-23995.html",
      "https://security.archlinux.org/CVE-2021-23995",
      "https://linux.oracle.com/cve/CVE-2021-23995.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "aliases": [
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      ],
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      "id": "GSD-2021-23995",
      "modified": "2023-12-13T01:23:29.791700Z",
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    }
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "HIGH",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.1,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
            "version": "2.0"
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          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
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        },
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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            "version": "3.1"
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          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-07-02T16:59Z",
      "publishedDate": "2021-06-24T14:15Z"
    }
  }
}


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  • 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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