gsd-2023-28120
Vulnerability from gsd
Modified
2023-03-13 00:00
Details
There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input. This vulnerability has been assigned the CVE identifier CVE-2023-28120. Versions Affected: All. Not affected: None Fixed Versions: 7.0.4.3, 6.1.7.3 # Impact ActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized. When these strings are mutated, the tag is should be removed to mark them as no longer being html_safe. Ruby 3.2 introduced a new bytesplice method which ActiveSupport did not yet understand to be a mutation. Users on older versions of Ruby are likely unaffected. All users running an affected release and using bytesplice should either upgrade or use one of the workarounds immediately. # Workarounds Avoid calling bytesplice on a SafeBuffer (html_safe) string with untrusted user input.
Aliases
Aliases
CVE-2023-28120


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-28120",
    "id": "GSD-2023-28120"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "activesupport",
            "purl": "pkg:gem/activesupport"
          }
        }
      ],
      "aliases": [
        "CVE-2023-28120",
        "GHSA-pj73-v5mw-pm9j"
      ],
      "details": "There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.\nThis vulnerability has been assigned the CVE identifier CVE-2023-28120.\n\nVersions Affected: All. Not affected: None Fixed Versions: 7.0.4.3, 6.1.7.3\n\n# Impact\n\nActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized.\nWhen these strings are mutated, the tag is should be removed to mark them as no longer being html_safe.\n\nRuby 3.2 introduced a new bytesplice method which ActiveSupport did not yet understand to be a mutation.\nUsers on older versions of Ruby are likely unaffected.\n\nAll users running an affected release and using bytesplice should either upgrade or use one of the workarounds immediately.\n\n# Workarounds\n\nAvoid calling bytesplice on a SafeBuffer (html_safe) string with untrusted user input.\n",
      "id": "GSD-2023-28120",
      "modified": "2023-03-13T00:00:00.000Z",
      "published": "2023-03-13T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://discuss.rubyonrails.org/t/cve-2023-28120-possible-xss-security-vulnerability-in-safebuffer-bytesplice/82469"
        }
      ],
      "schema_version": "1.4.0",
      "summary": "Possible XSS Security Vulnerability in SafeBuffer#bytesplice"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2023-28120",
        "STATE": "RESERVED"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2023-28120",
      "date": "2023-03-13",
      "description": "There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.\nThis vulnerability has been assigned the CVE identifier CVE-2023-28120.\n\nVersions Affected: All. Not affected: None Fixed Versions: 7.0.4.3, 6.1.7.3\n\n# Impact\n\nActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized.\nWhen these strings are mutated, the tag is should be removed to mark them as no longer being html_safe.\n\nRuby 3.2 introduced a new bytesplice method which ActiveSupport did not yet understand to be a mutation.\nUsers on older versions of Ruby are likely unaffected.\n\nAll users running an affected release and using bytesplice should either upgrade or use one of the workarounds immediately.\n\n# Workarounds\n\nAvoid calling bytesplice on a SafeBuffer (html_safe) string with untrusted user input.\n",
      "framework": "rails",
      "gem": "activesupport",
      "ghsa": "pj73-v5mw-pm9j",
      "patched_versions": [
        "~\u003e 6.1.7, \u003e= 6.1.7.3",
        "\u003e= 7.0.4.3"
      ],
      "title": "Possible XSS Security Vulnerability in SafeBuffer#bytesplice",
      "url": "https://discuss.rubyonrails.org/t/cve-2023-28120-possible-xss-security-vulnerability-in-safebuffer-bytesplice/82469"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c6.1.7.3||\u003e=7.0.0 \u003c7.0.4.3",
          "affected_versions": "All versions before 6.1.7.3, all versions starting from 7.0.0 before 7.0.4.3",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2023-03-15",
          "description": "There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.\nThis vulnerability has been assigned the CVE identifier CVE-2023-28120.\n\nVersions Affected: All. Not affected: None Fixed Versions: 7.0.4.3, 6.1.7.3\n\n# Impact\n\nActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized.\nWhen these strings are mutated, the tag is should be removed to mark them as no longer being html_safe.\n\nRuby 3.2 introduced a new bytesplice method which ActiveSupport does not yet understand to be a mutation.\nUsers on older versions of Ruby are likely unaffected.\n\nAll users running an affected release and using bytesplice should either upgrade or use one of the workarounds immediately.\n\n# Workarounds\n\nAvoid calling bytesplice on a SafeBuffer (html_safe) string with untrusted user input.\n",
          "fixed_versions": [
            "6.1.7.3",
            "7.0.4.3"
          ],
          "identifier": "GMS-2023-765",
          "identifiers": [
            "GHSA-pj73-v5mw-pm9j",
            "GMS-2023-765",
            "CVE-2023-28120"
          ],
          "not_impacted": "All versions starting from 6.1.7.3 before 7.0.0, all versions starting from 7.0.4.3",
          "package_slug": "gem/activesupport",
          "pubdate": "2023-03-15",
          "solution": "Upgrade to versions 6.1.7.3, 7.0.4.3 or above.",
          "title": "Possible XSS Security Vulnerability in SafeBuffer#bytesplice",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2023-28120",
            "https://discuss.rubyonrails.org/t/cve-2023-28120-possible-xss-security-vulnerability-in-safebuffer-bytesplice/82469",
            "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2023-28120.yml",
            "https://github.com/advisories/GHSA-pj73-v5mw-pm9j"
          ],
          "uuid": "6ce441b7-9e7a-4876-bf3f-fea00887e42d"
        }
      ]
    }
  }
}


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