cnvd - cnvd-2020-16645

cnvd-2020-16645

Vulnerability from cnvd

Title: Dovecot内存破坏漏洞

Description:

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

Dovecot 2.3.9版本及之后版本（2.3.9.3版本已修复）中存在安全漏洞，该漏洞源于submission-login和lmtp中的lib-smtp错误的处理了截断的UTF-8数据。攻击者可利用该漏洞造成拒绝服务（无限循环）。

Severity: 低

Patch Name: Dovecot内存破坏漏洞的补丁

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。

Dovecot 2.3.9版本及之后版本（2.3.9.3版本已修复）中存在安全漏洞，该漏洞源于submission-login和lmtp中的lib-smtp错误的处理了截断的UTF-8数据。攻击者可利用该漏洞造成拒绝服务（无限循环）。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://dovecot.org/security

Reference: http://www.openwall.com/lists/oss-security/2020/02/12/1

Impacted products

Name
Dovecot Dovecot >2.3.9

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-7046",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-7046"
    }
  },
  "description": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u57fa\u4e8e\u7c7bLinux/UNIX\u7cfb\u7edf\u7684IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\u3002\n\nDovecot 2.3.9\u7248\u672c\u53ca\u4e4b\u540e\u7248\u672c\uff082.3.9.3\u7248\u672c\u5df2\u4fee\u590d\uff09\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8esubmission-login\u548clmtp\u4e2d\u7684lib-smtp\u9519\u8bef\u7684\u5904\u7406\u4e86\u622a\u65ad\u7684UTF-8\u6570\u636e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u65e0\u9650\u5faa\u73af\uff09\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0:\r\nhttps://dovecot.org/security",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-16645",
  "openTime": "2020-03-10",
  "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 2.3.9\u7248\u672c\u53ca\u4e4b\u540e\u7248\u672c\uff082.3.9.3\u7248\u672c\u5df2\u4fee\u590d\uff09\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8esubmission-login\u548clmtp\u4e2d\u7684lib-smtp\u9519\u8bef\u7684\u5904\u7406\u4e86\u622a\u65ad\u7684UTF-8\u6570\u636e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u65e0\u9650\u5faa\u73af\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\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Dovecot Dovecot \u003e2.3.9"
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2020/02/12/1",
  "serverity": "\u4f4e",
  "submitTime": "2020-03-09",
  "title": "Dovecot\u5185\u5b58\u7834\u574f\u6f0f\u6d1e"
}

CVE-2020-7046 (GCVE-0-2020-7046)

Vulnerability from cvelistv5

Published

2020-02-12 16:40

Modified

2024-08-04 09:18

Severity ?

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

CWE

Summary

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

References

▼	URL	Tags
	https://dovecot.org/security	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2020/02/12/1	x_refsource_CONFIRM
	https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html	x_refsource_CONFIRM
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/	vendor-advisory, x_refsource_FEDORA

Impacted products

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

Show details on NVD website

JSON

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{
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          "dateUpdated": "2024-08-04T09:18:02.989Z",
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            ],
            "url": "https://dovecot.org/security"
          },
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            "url": "https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html"
          },
          {
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "vendor": "n/a",
          "versions": [
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      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
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      "providerMetadata": {
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      ],
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}

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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