github - ghsa-4qrj-99r6-jfrh

GHSA-4QRJ-99R6-JFRH

Vulnerability from github – Published: 2022-05-24 17:28 – Updated: 2023-12-14 10:03

Summary

Missing hostname validation in Email Extension Plugin

Details

Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections.

Email Extension Plugin 2.76 validates the SMTP hostname when connecting via TLS by default. In Email Extension Plugin 2.75 and earlier, administrators can set the Java system property mail.smtp.ssl.checkserveridentity to true on startup to enable this protection. Alternatively, this protection can be enabled (or disabled in the new version) via the 'Advanced Email Properties' field in the plugin’s configuration in Configure System.

In case of problems, this protection can be disabled again by setting mail.smtp.ssl.checkserveridentity to false using either method.

Severity ?

4.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Show details on source website

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.75"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.jenkins-ci.plugins:email-ext"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.76"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-2253"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-29T01:29:38Z",
    "nvd_published_at": "2020-09-16T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections.\n\nEmail Extension Plugin 2.76 validates the SMTP hostname when connecting via TLS by default. In Email Extension Plugin 2.75 and earlier, administrators can set the Java system property `mail.smtp.ssl.checkserveridentity` to `true` on startup to enable this protection. Alternatively, this protection can be enabled (or disabled in the new version) via the \u0027Advanced Email Properties\u0027 field in the plugin\u2019s configuration in Configure System.\n\nIn case of problems, this protection can be disabled again by setting `mail.smtp.ssl.checkserveridentity` to `false` using either method.",
  "id": "GHSA-4qrj-99r6-jfrh",
  "modified": "2023-12-14T10:03:59Z",
  "published": "2022-05-24T17:28:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-2253"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jenkinsci/email-ext-plugin/commit/ac039ba581f5946975a327709ff201b459900caa"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jenkinsci/email-ext-plugin"
    },
    {
      "type": "WEB",
      "url": "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2020/09/16/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Missing hostname validation in Email Extension Plugin"
}

CVE-2020-2253 (GCVE-0-2020-2253)

Vulnerability from cvelistv5 – Published: 2020-09-16 13:20 – Updated: 2024-08-04 07:01

Summary

Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.

Severity ?

No CVSS data available.

Assigner

jenkins

References

URL

Tags

	https://www.jenkins.io/security/advisory/2020-09-…	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2020/09/16/3	mailing-listx_refsource_MLIST

Impacted products

	Vendor	Product	Version
	Jenkins project	Jenkins Email Extension Plugin	Affected: unspecified , ≤ 2.75 (custom) Unaffected: 2.69.1 Unaffected: 2.68.1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:01:41.510Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851"
          },
          {
            "name": "[oss-security] 20200916 Multiple vulnerabilities in Jenkins plugins",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/09/16/3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Jenkins Email Extension Plugin",
          "vendor": "Jenkins project",
          "versions": [
            {
              "lessThanOrEqual": "2.75",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "2.69.1"
            },
            {
              "status": "unaffected",
              "version": "2.68.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-24T16:07:55.337Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851"
        },
        {
          "name": "[oss-security] 20200916 Multiple vulnerabilities in Jenkins plugins",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/09/16/3"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "jenkinsci-cert@googlegroups.com",
          "ID": "CVE-2020-2253",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Jenkins Email Extension Plugin",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2.75"
                          },
                          {
                            "version_affected": "!",
                            "version_value": "2.69.1"
                          },
                          {
                            "version_affected": "!",
                            "version_value": "2.68.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Jenkins project"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-297: Improper Validation of Certificate with Host Mismatch"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851",
              "refsource": "CONFIRM",
              "url": "https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851"
            },
            {
              "name": "[oss-security] 20200916 Multiple vulnerabilities in Jenkins plugins",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/09/16/3"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2020-2253",
    "datePublished": "2020-09-16T13:20:39",
    "dateReserved": "2019-12-05T00:00:00",
    "dateUpdated": "2024-08-04T07:01:41.510Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-4QRJ-99R6-JFRH

CVE-2020-2253 (GCVE-0-2020-2253)

Tags

Sightings

Nomenclature