GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2015-9096 (GCVE-0-2015-9096)

Vulnerability from cvelistv5 – Published: 2017-06-12 20:00 – Updated: 2024-08-06 08:36
VLAI
Summary
Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.
Severity
6.1 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • n/a
Assigner
References
Date Public
2017-06-12 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T08:36:31.894Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "DSA-3966",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2017/dsa-3966"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/137631"
          },
          {
            "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/rubysec/ruby-advisory-db/issues/215"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.mbsd.jp/Whitepaper/smtpi.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2017-06-12T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-07-14T09:57:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "DSA-3966",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2017/dsa-3966"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/137631"
        },
        {
          "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/rubysec/ruby-advisory-db/issues/215"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://www.mbsd.jp/Whitepaper/smtpi.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2015-9096",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "DSA-3966",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2017/dsa-3966"
            },
            {
              "name": "https://hackerone.com/reports/137631",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/137631"
            },
            {
              "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
            },
            {
              "name": "https://github.com/rubysec/ruby-advisory-db/issues/215",
              "refsource": "MISC",
              "url": "https://github.com/rubysec/ruby-advisory-db/issues/215"
            },
            {
              "name": "https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee",
              "refsource": "MISC",
              "url": "https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee"
            },
            {
              "name": "http://www.mbsd.jp/Whitepaper/smtpi.pdf",
              "refsource": "MISC",
              "url": "http://www.mbsd.jp/Whitepaper/smtpi.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2015-9096",
    "datePublished": "2017-06-12T20:00:00.000Z",
    "dateReserved": "2017-06-12T00:00:00.000Z",
    "dateUpdated": "2024-08-06T08:36:31.894Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2015-9096",
      "date": "2026-09-14",
      "epss": "0.03717",
      "percentile": "0.89157"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2015-9096\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2017-06-12T20:29:00.190\",\"lastModified\":\"2026-05-13T00:24:29.033\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.\"},{\"lang\":\"es\",\"value\":\"El modulo Net::SMTP de Ruby anterior a su versi\u00f3n 2.4.0 es vulnerable a la inyecci\u00f3n de comandos SMTP mediante secuencias CRLF de los comandos \\\"RCPT TO\\\" o \\\"MAIL FROM\\\", como demuestra las secuencias CRLF inmediatamente antes y despu\u00e9s de la substring DATA.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-93\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:ruby-lang:ruby:*:rc1:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.4.0\",\"matchCriteriaId\":\"70BED4E2-17E3-4B9D-8C58-ECBE978E90F3\"}]}]}],\"references\":[{\"url\":\"http://www.mbsd.jp/Whitepaper/smtpi.pdf\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/rubysec/ruby-advisory-db/issues/215\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/137631\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.debian.org/security/2017/dsa-3966\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.mbsd.jp/Whitepaper/smtpi.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/ruby/ruby/commit/0827a7e52ba3d957a634b063bf5a391239b9ffee\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/rubysec/ruby-advisory-db/issues/215\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/137631\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2017/dsa-3966\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-05-18T10:10:19+00:00",
      "cve": "CVE-2015-9096",
      "id": "CVE-2015-9096",
      "initial_release_date": "2015-01-01T00:00:00+00:00",
      "product_status:fixed": "12",
      "product_status:known_affected": "68",
      "product_status:known_not_affected": "21",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ruby: SMTP command injection via CRLF sequences in RCPT TO or MAIL FROM commands in Net::SMTP",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-9096.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.