gsd-2020-5247
Vulnerability from gsd
Modified
2020-02-27 00:00
Details
If an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. CR, LF) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).
Aliases
Aliases
CVE-2020-5247


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-5247",
    "description": "In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.",
    "id": "GSD-2020-5247",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-5247.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "puma",
            "purl": "pkg:gem/puma"
          }
        }
      ],
      "aliases": [
        "CVE-2020-5247",
        "GHSA-84j7-475p-hp8v"
      ],
      "details": "If an application using Puma allows untrusted input in a response header,\nan attacker can use newline characters (i.e. CR, LF) to end the header and\ninject malicious content, such as additional headers or an entirely new\nresponse body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several\nother attacks, such as cross-site scripting (XSS).",
      "id": "GSD-2020-5247",
      "modified": "2020-02-27T00:00:00.000Z",
      "published": "2020-02-27T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
        }
      ],
      "related": [
        "CVE-2019-16254"
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 6.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "HTTP Response Splitting vulnerability in puma"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-5247",
        "STATE": "PUBLIC",
        "TITLE": "HTTP Response Splitting in Puma"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Puma",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 3.12.3"
                        },
                        {
                          "version_value": "\u003e= 4.0.0, \u003c 4.3.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "puma"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers (\u0027HTTP Response Splitting\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v",
            "refsource": "CONFIRM",
            "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
          },
          {
            "name": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting",
            "refsource": "MISC",
            "url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting"
          },
          {
            "name": "https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254",
            "refsource": "MISC",
            "url": "https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254"
          },
          {
            "name": "FEDORA-2020-a3f26a9387",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/"
          },
          {
            "name": "FEDORA-2020-fd87f90634",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/"
          },
          {
            "name": "FEDORA-2020-08092b4c97",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/"
          },
          {
            "name": "[debian-lts-announce] 20220525 [SECURITY] [DLA 3023-1] puma security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-84j7-475p-hp8v",
        "discovery": "UNKNOWN"
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2020-5247",
      "cvss_v3": 6.5,
      "date": "2020-02-27",
      "description": "If an application using Puma allows untrusted input in a response header,\nan attacker can use newline characters (i.e. CR, LF) to end the header and\ninject malicious content, such as additional headers or an entirely new\nresponse body. This vulnerability is known as HTTP Response Splitting.\n\nWhile not an attack in itself, response splitting is a vector for several\nother attacks, such as cross-site scripting (XSS).",
      "gem": "puma",
      "ghsa": "84j7-475p-hp8v",
      "patched_versions": [
        "~\u003e 3.12.4",
        "\u003e= 4.3.3"
      ],
      "related": {
        "cve": [
          "2019-16254"
        ]
      },
      "title": "HTTP Response Splitting vulnerability in puma",
      "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c=3.12.3||\u003e=4.0.0 \u003c=4.3.2",
          "affected_versions": "All versions up to 3.12.3, all versions starting from 4.0.0 up to 4.3.2",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-74",
            "CWE-937"
          ],
          "date": "2020-04-09",
          "description": "In Puma (RubyGem), if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or `/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).",
          "fixed_versions": [
            "3.12.4",
            "4.3.3"
          ],
          "identifier": "CVE-2020-5247",
          "identifiers": [
            "CVE-2020-5247",
            "GHSA-84j7-475p-hp8v"
          ],
          "not_impacted": "All versions after 3.12.3 before 4.0.0, all versions after 4.3.2",
          "package_slug": "gem/gitlab-puma",
          "pubdate": "2020-02-28",
          "solution": "Upgrade to versions 3.12.4, 4.3.3 or above.",
          "title": "Improper Neutralization of CRLF Sequences in HTTP Headers",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-5247",
            "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
          ],
          "uuid": "88dee616-d01b-4273-897d-fd364b80c881"
        },
        {
          "affected_range": "\u003c=3.12.3||\u003e=4.0.0 \u003c=4.3.2",
          "affected_versions": "All versions up to 3.12.3, all versions starting from 4.0.0 up to 4.3.2",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-74",
            "CWE-937"
          ],
          "date": "2020-04-09",
          "description": "In Puma (RubyGem), if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).",
          "fixed_versions": [
            "3.12.4",
            "4.3.3"
          ],
          "identifier": "CVE-2020-5247",
          "identifiers": [
            "CVE-2020-5247",
            "GHSA-84j7-475p-hp8v"
          ],
          "not_impacted": "All versions after 3.12.3 before 4.0.0, all versions after 4.3.2",
          "package_slug": "gem/puma",
          "pubdate": "2020-02-28",
          "solution": "Upgrade to versions 3.12.4, 4.3.3 or above.",
          "title": "Improper Neutralization of CRLF Sequences in HTTP Headers",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-5247",
            "https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254",
            "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
          ],
          "uuid": "66c46af8-8f1d-46c9-be8e-36ee0801fba3"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.6.4",
                "versionStartIncluding": "2.6.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.5.6",
                "versionStartIncluding": "2.5.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.4.7",
                "versionStartIncluding": "2.4.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.3.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.3.2",
                "versionStartIncluding": "4.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.12.3",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:ruby-lang:ruby:2.7.0:preview1:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-5247"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-113"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v",
              "refsource": "CONFIRM",
              "tags": [
                "Mitigation",
                "Third Party Advisory"
              ],
              "url": "https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v"
            },
            {
              "name": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://owasp.org/www-community/attacks/HTTP_Response_Splitting"
            },
            {
              "name": "https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254"
            },
            {
              "name": "FEDORA-2020-a3f26a9387",
              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/"
            },
            {
              "name": "FEDORA-2020-fd87f90634",
              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/"
            },
            {
              "name": "FEDORA-2020-08092b4c97",
              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/"
            },
            {
              "name": "[debian-lts-announce] 20220525 [SECURITY] [DLA 3023-1] puma security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-10-12T13:35Z",
      "publishedDate": "2020-02-28T17:15Z"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.