Vulnerability-Lookup

CVE-2017-2669 (GCVE-0-2017-2669)

Vulnerability from cvelistv5 – Published: 2018-06-21 13:00 – Updated: 2024-08-05 14:02

Summary

Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.

Severity

3.7 (Low)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-20

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1046 records in the last 180 days details

References

6 references

URL	Tags
https://dovecot.org/pipermail/dovecot-news/2017-A…	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2017/04/11/1	mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://github.com/dovecot/core/commit/000030feb7…	x_refsource_CONFIRM
https://www.debian.org/security/2017/dsa-3828	vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/97536	vdb-entryx_refsource_BID

Impacted products

1 product

Vendor	Product	Version	CPE status
[UNKNOWN]	dovecot	Affected: dovecot 2.2.29	guessed

Date Public

2017-04-10 00:00

Show details on NVD website

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To clipboard

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              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/97536"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2017/dsa-3828"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/97536"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2017/dsa-3828"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T11:52:06+00:00",
      "cve": "CVE-2017-2669",
      "id": "CVE-2017-2669",
      "initial_release_date": "2017-04-10T00:00:00+00:00",
      "product_status:known_not_affected": "13",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dovecot: Dovecot DoS when passdb dict was used for authentication",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-2669.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-26T00:48:02Z",
      "cve": "CVE-2017-2669",
      "id": "CVE-2017-2669",
      "initial_release_date": "2023-02-15T04:52:43Z",
      "product_status:recommended": "82",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2017-2669",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-2669.json",
      "version": "11"
    }
  }
}

CNVD-2017-05204

Vulnerability from cnvd - Published: 2017-04-24

Title

Dovecot远程拒绝服务漏洞

Description

Dovecot是一款开源的基于类Linux/UNIX系统的IMAP和POP3邮件服务器。 Dovecot2.2.26版本至2.2.28版本中存在远程拒绝服务漏洞。远程攻击者可利用该漏洞造成进程崩溃或占用过多CPU资源，导致拒绝服务。

Severity

中

Patch Name

Dovecot远程拒绝服务漏洞的补丁

Patch Description

Dovecot是一款开源的基于类Linux/UNIX系统的IMAP和POP3邮件服务器。 Dovecot2.2.26版本至2.2.28版本中存在远程拒绝服务漏洞。远程攻击者可利用该漏洞造成进程崩溃或占用过多CPU资源，导致拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/dovecot/core/commit/a3783f8a3c9cd816b51e77a922f82301512fcf22

Reference

http://www.securityfocus.com/bid/97536

Impacted products

Name
Dovecot Dovecot >=2.2.26，<=2.2.28

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-2669"
    }
  },
  "description": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u57fa\u4e8e\u7c7bLinux/UNIX\u7cfb\u7edf\u7684IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\u3002\r\n\r\nDovecot2.2.26\u7248\u672c\u81f32.2.28\u7248\u672c\u4e2d\u5b58\u5728\u8fdc\u7a0b\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u8fdb\u7a0b\u5d29\u6e83\u6216\u5360\u7528\u8fc7\u591aCPU\u8d44\u6e90\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Dovecot",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/dovecot/core/commit/a3783f8a3c9cd816b51e77a922f82301512fcf22",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-05204",
  "openTime": "2017-04-24",
  "patchDescription": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u57fa\u4e8e\u7c7bLinux/UNIX\u7cfb\u7edf\u7684IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\u3002\r\n\r\nDovecot2.2.26\u7248\u672c\u81f32.2.28\u7248\u672c\u4e2d\u5b58\u5728\u8fdc\u7a0b\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u8fdb\u7a0b\u5d29\u6e83\u6216\u5360\u7528\u8fc7\u591aCPU\u8d44\u6e90\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Dovecot\u8fdc\u7a0b\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Dovecot Dovecot \u003e=2.2.26\uff0c\u003c=2.2.28"
  },
  "referenceLink": "http://www.securityfocus.com/bid/97536",
  "serverity": "\u4e2d",
  "submitTime": "2017-04-13",
  "title": "Dovecot\u8fdc\u7a0b\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

FKIE_CVE-2017-2669

Vulnerability from fkie_nvd - Published: 2018-06-21 13:29 - Updated: 2026-06-17 01:16

Severity

3.7 (Low) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
secalert@redhat.com	http://www.openwall.com/lists/oss-security/2017/04/11/1	Mailing List, Third Party Advisory
secalert@redhat.com	http://www.securityfocus.com/bid/97536	Third Party Advisory, VDB Entry
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669	Issue Tracking, Third Party Advisory
secalert@redhat.com	https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html	Vendor Advisory
secalert@redhat.com	https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch	Third Party Advisory
secalert@redhat.com	https://www.debian.org/security/2017/dsa-3828	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2017/04/11/1	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/97536	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669	Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2017/dsa-3828	Third Party Advisory

Impacted products

	Vendor	Product	Version
	dovecot	dovecot	*
	debian	debian_linux	8.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "dovecot",
          "vendor": "[UNKNOWN]",
          "versions": [
            {
              "status": "affected",
              "version": "dovecot 2.2.29"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D6A0F511-D72E-464A-BA7B-477C9CC0B479",
              "versionEndIncluding": "2.2.28",
              "versionStartIncluding": "2.2.26",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang."
    },
    {
      "lang": "es",
      "value": "Dovecot en versiones anteriores a la 2.2.29 es vulnerable a una denegaci\u00f3n de servicio (DoS). Cuando se emplearon los \"dict\" passdb y userdb para la autenticaci\u00f3n de usuarios, el nombre de usuario enviado por el cliente IMAP/POP3 se envi\u00f3 mediante var_expand() para realizar la expansi\u00f3n de %variable. El env\u00edo de campos %variable especialmente manipulados podr\u00eda resultar en un uso excesivo de memoria que provoca que el proceso se cierre inesperadamente (y se reinicie) o en un uso excesivo de CPU que provoca que todas las autenticaciones dejen de responder."
    }
  ],
  "id": "CVE-2017-2669",
  "lastModified": "2026-06-17T01:16:37.520",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-06-21T13:29:00.317",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/97536"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2017/dsa-3828"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/97536"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2017/dsa-3828"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-QCHV-9M57-Q82H

Vulnerability from github – Published: 2022-05-13 01:36 – Updated: 2022-05-13 01:36

Details

Severity

7.5 (High)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2017-2669"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-06-21T13:29:00Z",
    "severity": "HIGH"
  },
  "details": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.",
  "id": "GHSA-qchv-9m57-q82h",
  "modified": "2022-05-13T01:36:49Z",
  "published": "2022-05-13T01:36:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2669"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
    },
    {
      "type": "WEB",
      "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2017/dsa-3828"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/97536"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2017-2669

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

Aliases

CVE-2017-2669

Aliases

CVE-2017-2669

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2017-2669",
    "description": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.",
    "id": "GSD-2017-2669",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-2669.html",
      "https://www.debian.org/security/2017/dsa-3828",
      "https://ubuntu.com/security/CVE-2017-2669",
      "https://security.archlinux.org/CVE-2017-2669"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-2669"
      ],
      "details": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.",
      "id": "GSD-2017-2669",
      "modified": "2023-12-13T01:21:05.185712Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2017-2669",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "dovecot",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "dovecot 2.2.29"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "[UNKNOWN]"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang."
          }
        ]
      },
      "impact": {
        "cvss": [
          [
            {
              "vectorString": "3.7/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.0"
            }
          ]
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-20"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "[dovecot-news] 20170410 v2.2.29 released",
            "refsource": "MLIST",
            "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
          },
          {
            "name": "[oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669",
            "refsource": "CONFIRM",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
          },
          {
            "name": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch",
            "refsource": "CONFIRM",
            "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
          },
          {
            "name": "DSA-3828",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2017/dsa-3828"
          },
          {
            "name": "97536",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/97536"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.2.28",
                "versionStartIncluding": "2.2.26",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2017-2669"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-20"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
            },
            {
              "name": "[dovecot-news] 20170410 v2.2.29 released",
              "refsource": "MLIST",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
            },
            {
              "name": "[oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
            },
            {
              "name": "DSA-3828",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2017/dsa-3828"
            },
            {
              "name": "97536",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/97536"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "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": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2019-10-09T23:27Z",
      "publishedDate": "2018-06-21T13:29Z"
    }
  }
}

SUSE-SU-2017:1250-1

Vulnerability from csaf_suse - Published: 2017-05-11 14:23 - Updated: 2026-09-20 12:26

Summary

Security update for dovecot22

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2017-2669.

CVE-2017-2669

7.5 (High)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 63 products

Open the full advisory

UBUNTU-CVE-2017-2669 (CVE-2017-2669)

Vulnerability from osv_ubuntu – Published: 2017-04-10 00:00 – Updated: 2025-07-16 04:51 – Source website

Withdrawn 2025-07-18

Details

Severity

7.5 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

3.7 (Low)


                    
                      CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2017-2669	REPORT
	https://ubuntu.com/security/notices/USN-3258-1	ADVISORY
	https://ubuntu.com/security/notices/USN-3258-2	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2017-2669	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dovecot-core",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-dbg",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-dev",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-gssapi",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-imapd",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-ldap",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-lmtpd",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-managesieved",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-mysql",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-pgsql",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-pop3d",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-sieve",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-solr",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "dovecot-sqlite",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          },
          {
            "binary_name": "mail-stack-delivery",
            "binary_version": "1:2.2.9-1ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "dovecot",
        "purl": "pkg:deb/ubuntu/dovecot@1:2.2.9-1ubuntu2.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.2.9-1ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.1.7-7ubuntu3",
        "1:2.2.9-1ubuntu1",
        "1:2.2.9-1ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When \u0027dict\u0027 passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.",
  "id": "UBUNTU-CVE-2017-2669",
  "modified": "2025-07-16T04:51:45Z",
  "published": "2017-04-10T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-2669"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3258-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3258-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-2669"
    }
  ],
  "related": [
    "USN-3258-1",
    "USN-3258-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-2669"
  ],
  "withdrawn": "2025-07-18T16:43:48Z"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2017-2669 (GCVE-0-2017-2669)

CNVD-2017-05204

FKIE_CVE-2017-2669

GHSA-QCHV-9M57-Q82H

GSD-2017-2669

SUSE-SU-2017:1250-1

UBUNTU-CVE-2017-2669 (CVE-2017-2669)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour