ghsa-2rxp-v6pw-ch6m
Vulnerability from github
Published
2024-10-28 14:10
Modified
2024-10-29 14:59
Summary
REXML ReDoS vulnerability
Details

Impact

The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;).

This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. Note that Ruby 3.1 will reach EOL on 2025-03.

Patches

The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

Workarounds

Use Ruby 3.2 or later instead of Ruby 3.1.

References

  • https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/: An announce on www.ruby-lang.org
Show details on source website


{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rexml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-49761"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-28T14:10:18Z",
    "nvd_published_at": "2024-10-28T15:15:05Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between `\u0026#` and `x...;` in a hex numeric character reference (`\u0026#x...;`).\n\nThis does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. Note that Ruby 3.1 will reach EOL on 2025-03.\n\n### Patches\n\nThe REXML gem 3.3.9 or later include the patch to fix the vulnerability.\n\n### Workarounds\n\nUse Ruby 3.2 or later instead of Ruby 3.1.\n\n### References\n\n* https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/: An announce on www.ruby-lang.org\n",
  "id": "GHSA-2rxp-v6pw-ch6m",
  "modified": "2024-10-29T14:59:27Z",
  "published": "2024-10-28T14:10:18Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49761"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ruby/rexml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-49761.yml"
    },
    {
      "type": "WEB",
      "url": "https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "REXML ReDoS vulnerability"
}


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