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OESA-2021-1306 (CVE-2021-31799)

Vulnerability from osv_openeuler – Published: 2021-08-06 11:04 – Updated: 2026-08-06 11:04 – Source website
VLAI
Summary
ruby security update
Details

Ruby is a fast and easy interpreted scripting language for object-oriented programming. It has many functions for processing text Files and perform system management tasks (such as Perl).

Security Fix(es):

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.(CVE-2021-31799)

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).(CVE-2021-31810)

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."(CVE-2021-32066)

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ruby-2.5.8-114.oe1.aarch64.rpm",
          "rubygem-io-console-0.4.6-114.oe1.aarch64.rpm",
          "rubygem-bigdecimal-1.3.4-114.oe1.aarch64.rpm",
          "ruby-devel-2.5.8-114.oe1.aarch64.rpm",
          "ruby-debugsource-2.5.8-114.oe1.aarch64.rpm",
          "rubygem-json-2.1.0-114.oe1.aarch64.rpm",
          "ruby-debuginfo-2.5.8-114.oe1.aarch64.rpm",
          "rubygem-psych-3.0.2-114.oe1.aarch64.rpm",
          "rubygem-openssl-2.1.2-114.oe1.aarch64.rpm"
        ],
        "noarch": [
          "rubygem-xmlrpc-0.3.0-114.oe1.noarch.rpm",
          "rubygem-test-unit-3.2.7-114.oe1.noarch.rpm",
          "ruby-irb-2.5.8-114.oe1.noarch.rpm",
          "rubygem-net-telnet-0.1.1-114.oe1.noarch.rpm",
          "rubygem-rake-12.3.0-114.oe1.noarch.rpm",
          "ruby-help-2.5.8-114.oe1.noarch.rpm",
          "rubygems-2.7.6-114.oe1.noarch.rpm",
          "rubygem-did_you_mean-1.2.0-114.oe1.noarch.rpm",
          "rubygem-rdoc-6.0.1.1-114.oe1.noarch.rpm",
          "rubygem-power_assert-1.1.1-114.oe1.noarch.rpm",
          "rubygem-minitest-5.10.3-114.oe1.noarch.rpm",
          "rubygems-devel-2.7.6-114.oe1.noarch.rpm"
        ],
        "src": [
          "ruby-2.5.8-114.oe1.src.rpm"
        ],
        "x86_64": [
          "rubygem-json-2.1.0-114.oe1.x86_64.rpm",
          "ruby-devel-2.5.8-114.oe1.x86_64.rpm",
          "rubygem-bigdecimal-1.3.4-114.oe1.x86_64.rpm",
          "rubygem-io-console-0.4.6-114.oe1.x86_64.rpm",
          "rubygem-psych-3.0.2-114.oe1.x86_64.rpm",
          "ruby-2.5.8-114.oe1.x86_64.rpm",
          "ruby-debuginfo-2.5.8-114.oe1.x86_64.rpm",
          "rubygem-openssl-2.1.2-114.oe1.x86_64.rpm",
          "ruby-debugsource-2.5.8-114.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "ruby",
        "purl": "pkg:rpm/openEuler/ruby\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.8-114.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "rubygem-psych-3.0.2-114.oe1.aarch64.rpm",
          "rubygem-io-console-0.4.6-114.oe1.aarch64.rpm",
          "ruby-devel-2.5.8-114.oe1.aarch64.rpm",
          "ruby-2.5.8-114.oe1.aarch64.rpm",
          "rubygem-json-2.1.0-114.oe1.aarch64.rpm",
          "rubygem-bigdecimal-1.3.4-114.oe1.aarch64.rpm",
          "rubygem-openssl-2.1.2-114.oe1.aarch64.rpm",
          "ruby-debugsource-2.5.8-114.oe1.aarch64.rpm",
          "ruby-debuginfo-2.5.8-114.oe1.aarch64.rpm"
        ],
        "noarch": [
          "rubygem-rake-12.3.0-114.oe1.noarch.rpm",
          "ruby-help-2.5.8-114.oe1.noarch.rpm",
          "rubygem-power_assert-1.1.1-114.oe1.noarch.rpm",
          "ruby-irb-2.5.8-114.oe1.noarch.rpm",
          "rubygem-did_you_mean-1.2.0-114.oe1.noarch.rpm",
          "rubygem-minitest-5.10.3-114.oe1.noarch.rpm",
          "rubygem-xmlrpc-0.3.0-114.oe1.noarch.rpm",
          "rubygem-rdoc-6.0.1.1-114.oe1.noarch.rpm",
          "rubygem-net-telnet-0.1.1-114.oe1.noarch.rpm",
          "rubygem-test-unit-3.2.7-114.oe1.noarch.rpm",
          "rubygems-2.7.6-114.oe1.noarch.rpm",
          "rubygems-devel-2.7.6-114.oe1.noarch.rpm"
        ],
        "src": [
          "ruby-2.5.8-114.oe1.src.rpm"
        ],
        "x86_64": [
          "rubygem-json-2.1.0-114.oe1.x86_64.rpm",
          "ruby-2.5.8-114.oe1.x86_64.rpm",
          "rubygem-bigdecimal-1.3.4-114.oe1.x86_64.rpm",
          "rubygem-openssl-2.1.2-114.oe1.x86_64.rpm",
          "rubygem-psych-3.0.2-114.oe1.x86_64.rpm",
          "ruby-devel-2.5.8-114.oe1.x86_64.rpm",
          "ruby-debugsource-2.5.8-114.oe1.x86_64.rpm",
          "ruby-debuginfo-2.5.8-114.oe1.x86_64.rpm",
          "rubygem-io-console-0.4.6-114.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "ruby",
        "purl": "pkg:rpm/openEuler/ruby\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.8-114.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Ruby is a fast and easy interpreted scripting language for object-oriented programming. It has many functions for processing text Files and perform system management tasks (such as Perl).\r\n\r\nSecurity Fix(es):\r\n\r\nIn RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.(CVE-2021-31799)\r\n\r\nAn issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).(CVE-2021-31810)\r\n\r\nAn issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a \u0026quot;StartTLS stripping attack.\u0026quot;(CVE-2021-32066)",
  "id": "OESA-2021-1306",
  "modified": "2026-08-06T11:04:32Z",
  "published": "2021-08-06T11:04:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1306"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31799"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31810"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32066"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ruby security update",
  "upstream": [
    "CVE-2021-31799",
    "CVE-2021-31810",
    "CVE-2021-32066"
  ]
}



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