gsd-2020-10663
Vulnerability from gsd
Modified
2020-03-19 00:00
Details
There is an unsafe object creation vulnerability in the json gem bundled with Ruby. This vulnerability has been assigned the CVE identifier CVE-2020-10663. We strongly recommend upgrading the json gem. Details ------- When parsing certain JSON documents, the json gem (including the one bundled with Ruby) can be coerced into creating arbitrary objects in the target system. This is the same issue as CVE-2013-0269. The previous fix was incomplete, which addressed JSON.parse(user_input), but didn’t address some other styles of JSON parsing including JSON(user_input) and JSON.parse(user_input, nil). See CVE-2013-0269 in detail. Note that the issue was exploitable to cause a Denial of Service by creating many garbage-uncollectable Symbol objects, but this kind of attack is no longer valid because Symbol objects are now garbage-collectable. However, creating arbitrary objects may cause severe security consequences depending upon the application code.
Aliases
Aliases
CVE-2020-10663


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-10663",
    "description": "The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.",
    "id": "GSD-2020-10663",
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      "https://www.suse.com/security/cve/CVE-2020-10663.html",
      "https://www.debian.org/security/2020/dsa-4721",
      "https://access.redhat.com/errata/RHSA-2022:0582",
      "https://access.redhat.com/errata/RHSA-2022:0581",
      "https://access.redhat.com/errata/RHSA-2021:2588",
      "https://access.redhat.com/errata/RHSA-2021:2587",
      "https://access.redhat.com/errata/RHSA-2021:2230",
      "https://access.redhat.com/errata/RHSA-2021:2104",
      "https://access.redhat.com/errata/RHSA-2020:2670",
      "https://access.redhat.com/errata/RHSA-2020:2473",
      "https://access.redhat.com/errata/RHSA-2020:2462",
      "https://ubuntu.com/security/CVE-2020-10663",
      "https://advisories.mageia.org/CVE-2020-10663.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-10663.html",
      "https://linux.oracle.com/cve/CVE-2020-10663.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "id": "GSD-2020-10663",
      "modified": "2020-03-19T00:00:00.000Z",
      "published": "2020-03-19T00:00:00.000Z",
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      "description": "There is an unsafe object creation vulnerability in the json gem bundled with\nRuby. This vulnerability has been assigned the CVE identifier CVE-2020-10663.\nWe strongly recommend upgrading the json gem.\n\nDetails\n-------\n\nWhen parsing certain JSON documents, the json gem (including the one bundled\nwith Ruby) can be coerced into creating arbitrary objects in the target system.\n\nThis is the same issue as CVE-2013-0269. The previous fix was incomplete, which\naddressed JSON.parse(user_input), but didn\u2019t address some other styles of JSON\nparsing including JSON(user_input) and JSON.parse(user_input, nil).\n\nSee CVE-2013-0269 in detail. Note that the issue was exploitable to cause a\nDenial of Service by creating many garbage-uncollectable Symbol objects, but\nthis kind of attack is no longer valid because Symbol objects are now\ngarbage-collectable. However, creating arbitrary objects may cause severe\nsecurity consequences depending upon the application code.\n",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-03-28T18:06Z",
      "publishedDate": "2020-04-28T21:15Z"
    }
  }
}


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