cnvd - cnvd-2020-46785

cnvd-2020-46785

Vulnerability from cnvd

Title: Dovecot拒绝服务漏洞（ CNVD-2020-46785）

Description:

Dovecot是一款开源的基于类Linux/UNIX系统的IMAP和POP3邮件服务器。

Dovecot 2.3.11.3之前版本中存在安全漏洞。远程攻击者可借助特制的e-mail消息利用该漏洞造成拒绝服务（资源消耗）。

Severity: 中

Patch Name: Dovecot拒绝服务漏洞（ CNVD-2020-46785）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。

Dovecot 2.3.11.3之前版本中存在安全漏洞。远程攻击者可借助特制的e-mail消息利用该漏洞造成拒绝服务（资源消耗）。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://dovecot.org/pipermail/dovecot-news/2020-August/000441.html

Reference: https://www.debian.org/security/2020/dsa-4745; https://security-tracker.debian.org/tracker/CVE-2020-12100; https://security-tracker.debian.org/tracker/CVE-2020-12673; https://security-tracker.debian.org/tracker/CVE-2020-12674

Impacted products

Name
Dovecot Dovecot < 2.3.11.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12100",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-12100"
    }
  },
  "description": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u57fa\u4e8e\u7c7bLinux/UNIX\u7cfb\u7edf\u7684IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\u3002\n\nDovecot 2.3.11.3\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684e-mail\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d44\u6e90\u6d88\u8017\uff09\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://dovecot.org/pipermail/dovecot-news/2020-August/000441.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-46785",
  "openTime": "2020-08-18",
  "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\nDovecot 2.3.11.3\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684e-mail\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d44\u6e90\u6d88\u8017\uff09\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08 CNVD-2020-46785\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Dovecot Dovecot \u003c 2.3.11.3"
  },
  "referenceLink": "https://www.debian.org/security/2020/dsa-4745; https://security-tracker.debian.org/tracker/CVE-2020-12100; https://security-tracker.debian.org/tracker/CVE-2020-12673; https://security-tracker.debian.org/tracker/CVE-2020-12674",
  "serverity": "\u4e2d",
  "submitTime": "2020-08-17",
  "title": "Dovecot\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08 CNVD-2020-46785\uff09"
}

CVE-2020-12100 (GCVE-0-2020-12100)

Vulnerability from cvelistv5

Published

2020-08-12 15:07

Modified

2024-08-04 11:48

Severity ?

CWE

Summary

In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.

References

▼	URL	Tags
	https://dovecot.org/security	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2020/08/12/1	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2020/dsa-4745	vendor-advisory, x_refsource_DEBIAN
	https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/4456-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4456-2/	vendor-advisory, x_refsource_UBUNTU
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202009-02	vendor-advisory, x_refsource_GENTOO
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/	vendor-advisory, x_refsource_FEDORA
	http://www.openwall.com/lists/oss-security/2021/01/04/3	mailing-list, x_refsource_MLIST
	http://seclists.org/fulldisclosure/2021/Jan/18	mailing-list, x_refsource_FULLDISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
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          },
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            "name": "[oss-security] 20200812 CVE-2020-12100: Dovecot IMAP server: Receiving mail with deeply nested MIME parts leads to resource exhaustion",
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              "x_transferred"
            ],
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          },
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          },
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            "url": "https://usn.ubuntu.com/4456-1/"
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          },
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            "name": "[oss-security] 20210104 CVE-2020-25275: Dovecot: MIME parsing crash",
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            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/01/04/3"
          },
          {
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              "x_refsource_FULLDISC",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2021/Jan/18"
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        "title": "CVE Program Container"
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          "url": "http://www.openwall.com/lists/oss-security/2020/08/12/1"
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        },
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          "name": "[debian-lts-announce] 20200815 [SECURITY] [DLA 2328-1] dovecot security update",
          "tags": [
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          "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html"
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          ],
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        },
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          "tags": [
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            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4456-2/"
        },
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          "tags": [
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          "url": "https://security.gentoo.org/glsa/202009-02"
        },
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          "tags": [
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/"
        },
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          "name": "FEDORA-2020-d737c57172",
          "tags": [
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/"
        },
        {
          "name": "[oss-security] 20210104 CVE-2020-25275: Dovecot: MIME parsing crash",
          "tags": [
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          "url": "http://www.openwall.com/lists/oss-security/2021/01/04/3"
        },
        {
          "name": "20210106 CVE-2020-24386: IMAP hibernation allows accessing other peoples mail",
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          ],
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  "dataVersion": "5.1"
}

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.

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