gsd-2020-8163
Vulnerability from gsd
Modified
2020-05-15 00:00
Details
There was a vulnerability in versions of Rails prior to 5.0.1 that would allow an attacker who controlled the `locals` argument of a `render` call. Versions Affected: rails < 5.0.1 Not affected: Applications that do not allow users to control the names of locals. Fixed Versions: 4.2.11.2 Impact ------ In the scenario where an attacker might be able to control the name of a local passed into `render`, they can acheive remote code execution. Workarounds ----------- Until such time as the patch can be applied, application developers should ensure that all user-provided local names are alphanumeric.
Aliases
Aliases
CVE-2020-8163


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-8163",
    "description": "The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.",
    "id": "GSD-2020-8163",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-8163.html",
      "https://packetstormsecurity.com/files/cve/CVE-2020-8163"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "actionview",
            "purl": "pkg:gem/actionview"
          }
        }
      ],
      "aliases": [
        "CVE-2020-8163",
        "GHSA-cr3x-7m39-c6jq"
      ],
      "details": "There was a vulnerability in versions of Rails prior to 5.0.1 that would\nallow an attacker who controlled the `locals` argument of a `render` call.\n\nVersions Affected:  rails \u003c 5.0.1\nNot affected:       Applications that do not allow users to control the names of locals.\nFixed Versions:     4.2.11.2\n\nImpact\n------\n\nIn the scenario where an attacker might be able to control the name of a\nlocal passed into `render`, they can acheive remote code execution.\n\nWorkarounds\n-----------\n\nUntil such time as the patch can be applied, application developers should\nensure that all user-provided local names are alphanumeric.\n",
      "id": "GSD-2020-8163",
      "modified": "2020-05-15T00:00:00.000Z",
      "published": "2020-05-15T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://groups.google.com/forum/#!topic/rubyonrails-security/hWuKcHyoKh0"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 8.8,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Potential remote code execution of user-provided local names in ActionView"
    }
  },
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    },
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      "cve": "2020-8163",
      "cvss_v3": 8.8,
      "date": "2020-05-15",
      "description": "There was a vulnerability in versions of Rails prior to 5.0.1 that would\nallow an attacker who controlled the `locals` argument of a `render` call.\n\nVersions Affected:  rails \u003c 5.0.1\nNot affected:       Applications that do not allow users to control the names of locals.\nFixed Versions:     4.2.11.2\n\nImpact\n------\n\nIn the scenario where an attacker might be able to control the name of a\nlocal passed into `render`, they can acheive remote code execution.\n\nWorkarounds\n-----------\n\nUntil such time as the patch can be applied, application developers should\nensure that all user-provided local names are alphanumeric.\n",
      "framework": "rails",
      "gem": "actionview",
      "ghsa": "cr3x-7m39-c6jq",
      "patched_versions": [
        "\u003e= 4.2.11.2"
      ],
      "title": "Potential remote code execution of user-provided local names in ActionView",
      "url": "https://groups.google.com/forum/#!topic/rubyonrails-security/hWuKcHyoKh0"
    },
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          "cwe_ids": [
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          "not_impacted": "All versions starting from 5.0.1",
          "package_slug": "gem/actionview",
          "pubdate": "2020-07-02",
          "solution": "Upgrade to version 5.0.1 or above.",
          "title": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
          "urls": [
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            "https://hackerone.com/reports/304805",
            "https://groups.google.com/g/rubyonrails-security/c/hWuKcHyoKh0",
            "https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html",
            "http://packetstormsecurity.com/files/158604/Ruby-On-Rails-5.0.1-Remote-Code-Execution.html"
          ],
          "uuid": "e7b1faab-af9c-4887-91b6-f9bce85b8d52"
        },
        {
          "affected_range": "\u003c5.0.1",
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            "CWE-937",
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          "date": "2020-07-27",
          "description": "There is a code injection vulnerability in versions of Rails that would allow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.",
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            "5.0.1"
          ],
          "identifier": "CVE-2020-8163",
          "identifiers": [
            "CVE-2020-8163"
          ],
          "not_impacted": "All versions starting from 5.0.1",
          "package_slug": "gem/rails",
          "pubdate": "2020-07-02",
          "solution": "Upgrade to version 5.0.1 or above.",
          "title": "Code Injection",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-8163"
          ],
          "uuid": "41364cc8-22f6-4e1a-931b-1886194d132d"
        }
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                "versionEndExcluding": "5.0.1",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-05-24T16:06Z",
      "publishedDate": "2020-07-02T19:15Z"
    }
  }
}


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