CNVD-2015-08521

Vulnerability from cnvd - Published: 2015-12-31
VLAI
Title
Samba中间人攻击漏洞
Description
Samba是一套实现SMB（Server Messages Block）协议、跨平台进行文件共享和打印共享服务的程序。 Samba 4.1.22之前的4.x版本, 4.2.7之前的4.2.x版本, 4.3.3之前的4.3.x版本存在中间人攻击漏洞。攻击者通过修改客户机服务器的数据流进行encrypted-to-unencrypted降级攻击。
Severity
中
Patch Name
Samba中间人攻击漏洞的补丁
Patch Description
Samba是一套实现SMB（Server Messages Block）协议、跨平台进行文件共享和打印共享服务的程序。 Samba 4.1.22之前的4.x版本, 4.2.7之前的4.2.x版本, 4.3.3之前的4.3.x版本存在中间人攻击漏洞。攻击者通过修改客户机服务器的数据流进行encrypted-to-unencrypted降级攻击。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

用户可联系供应商获得补丁信息： https://www.samba.org/samba/history/security.html

Reference
https://www.samba.org/samba/security/CVE-2015-5296.html
Impacted products
Name
['Samba Samba 4.x(<4.1.22)', 'Samba Samba 4.2.x(<4.2.7)', 'Samba Samba 4.3.x(< 4.3.3)']
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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-5296"
    }
  },
  "description": "Samba\u662f\u4e00\u5957\u5b9e\u73b0SMB\uff08Server Messages Block\uff09\u534f\u8bae\u3001\u8de8\u5e73\u53f0\u8fdb\u884c\u6587\u4ef6\u5171\u4eab\u548c\u6253\u5370\u5171\u4eab\u670d\u52a1\u7684\u7a0b\u5e8f\u3002\r\n\r\nSamba 4.1.22\u4e4b\u524d\u76844.x\u7248\u672c, 4.2.7\u4e4b\u524d\u76844.2.x\u7248\u672c, 4.3.3\u4e4b\u524d\u76844.3.x\u7248\u672c\u5b58\u5728\u4e2d\u95f4\u4eba\u653b\u51fb\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u901a\u8fc7\u4fee\u6539\u5ba2\u6237\u673a\u670d\u52a1\u5668\u7684\u6570\u636e\u6d41\u8fdb\u884cencrypted-to-unencrypted\u964d\u7ea7\u653b\u51fb\u3002",
  "discovererName": "Stefan Metzmacher",
  "formalWay": "\u7528\u6237\u53ef\u8054\u7cfb\u4f9b\u5e94\u5546\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://www.samba.org/samba/history/security.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-08521",
  "openTime": "2015-12-31",
  "patchDescription": "Samba\u662f\u4e00\u5957\u5b9e\u73b0SMB\uff08Server Messages Block\uff09\u534f\u8bae\u3001\u8de8\u5e73\u53f0\u8fdb\u884c\u6587\u4ef6\u5171\u4eab\u548c\u6253\u5370\u5171\u4eab\u670d\u52a1\u7684\u7a0b\u5e8f\u3002\r\n\r\nSamba 4.1.22\u4e4b\u524d\u76844.x\u7248\u672c, 4.2.7\u4e4b\u524d\u76844.2.x\u7248\u672c, 4.3.3\u4e4b\u524d\u76844.3.x\u7248\u672c\u5b58\u5728\u4e2d\u95f4\u4eba\u653b\u51fb\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u901a\u8fc7\u4fee\u6539\u5ba2\u6237\u673a\u670d\u52a1\u5668\u7684\u6570\u636e\u6d41\u8fdb\u884cencrypted-to-unencrypted\u964d\u7ea7\u653b\u51fb\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": "Samba\u4e2d\u95f4\u4eba\u653b\u51fb\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Samba Samba  4.x(\u003c4.1.22)",
      "Samba Samba  4.2.x(\u003c4.2.7)",
      "Samba Samba  4.3.x(\u003c 4.3.3)"
    ]
  },
  "referenceLink": "https://www.samba.org/samba/security/CVE-2015-5296.html",
  "serverity": "\u4e2d",
  "submitTime": "2015-12-30",
  "title": "Samba\u4e2d\u95f4\u4eba\u653b\u51fb\u6f0f\u6d1e"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


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.