Vulnerability-Lookup

CNVD-2016-12887

Vulnerability from cnvd - Published: 2016-12-23

Title

Samba堆缓冲区溢出漏洞

Description

Samba是Samba团队开发的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。 Samba 4.3.13之前的4.3.x版本、4.4.8之前的4.4.x版本和4.5.3之前的4.5.x版本存在堆缓冲区溢出漏洞，该漏洞源于程序未能正确的对用户提交的数据执行边界检测，导致程序复制数据的大小超出了分配的内存缓冲区空间。攻击者可利用该漏洞在受影响的应用程序上下文中执行任意代码，可能导致拒绝服务。

Severity

中

Patch Name

Samba堆缓冲区溢出漏洞的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： https://bugzilla.redhat.com/show_bug.cgi?id=1392702

Reference

http://www.securityfocus.com/bid/94970

Impacted products

Name
['Samba Samba 4.3.<4.3.13', 'Samba Samba 4.4.<4.4.8', 'Samba Samba 4.5.*<4.5.3']

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "94970"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-2123"
    }
  },
  "description": "Samba\u662fSamba\u56e2\u961f\u5f00\u53d1\u7684\u4e00\u5957\u53ef\u4f7fUNIX\u7cfb\u5217\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u5fae\u8f6fWindows\u64cd\u4f5c\u7cfb\u7edf\u7684SMB/CIFS\u7f51\u7edc\u534f\u8bae\u505a\u8fde\u7ed3\u7684\u81ea\u7531\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u652f\u6301\u5171\u4eab\u6253\u5370\u673a\u3001\u4e92\u76f8\u4f20\u8f93\u8d44\u6599\u6587\u4ef6\u7b49\u3002\r\n\r\nSamba 4.3.13\u4e4b\u524d\u76844.3.x\u7248\u672c\u30014.4.8\u4e4b\u524d\u76844.4.x\u7248\u672c\u548c4.5.3\u4e4b\u524d\u76844.5.x\u7248\u672c\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5bf9\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u6267\u884c\u8fb9\u754c\u68c0\u6d4b\uff0c\u5bfc\u81f4\u7a0b\u5e8f\u590d\u5236\u6570\u636e\u7684\u5927\u5c0f\u8d85\u51fa\u4e86\u5206\u914d\u7684\u5185\u5b58\u7f13\u51b2\u533a\u7a7a\u95f4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u53d7\u5f71\u54cd\u7684\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u53ef\u80fd\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Trend Micro\u0027s Zero Day Initiative and Frederic Besler.",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1392702",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-12887",
  "openTime": "2016-12-23",
  "patchDescription": "Samba\u662fSamba\u56e2\u961f\u5f00\u53d1\u7684\u4e00\u5957\u53ef\u4f7fUNIX\u7cfb\u5217\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u5fae\u8f6fWindows\u64cd\u4f5c\u7cfb\u7edf\u7684SMB/CIFS\u7f51\u7edc\u534f\u8bae\u505a\u8fde\u7ed3\u7684\u81ea\u7531\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u652f\u6301\u5171\u4eab\u6253\u5370\u673a\u3001\u4e92\u76f8\u4f20\u8f93\u8d44\u6599\u6587\u4ef6\u7b49\u3002\r\n\r\nSamba 4.3.13\u4e4b\u524d\u76844.3.x\u7248\u672c\u30014.4.8\u4e4b\u524d\u76844.4.x\u7248\u672c\u548c4.5.3\u4e4b\u524d\u76844.5.x\u7248\u672c\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5bf9\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u6267\u884c\u8fb9\u754c\u68c0\u6d4b\uff0c\u5bfc\u81f4\u7a0b\u5e8f\u590d\u5236\u6570\u636e\u7684\u5927\u5c0f\u8d85\u51fa\u4e86\u5206\u914d\u7684\u5185\u5b58\u7f13\u51b2\u533a\u7a7a\u95f4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u53d7\u5f71\u54cd\u7684\u5e94\u7528\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u53ef\u80fd\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": "Samba\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Samba Samba 4.3.*\u003c4.3.13",
      "Samba Samba 4.4.*\u003c4.4.8",
      "Samba Samba 4.5.*\u003c4.5.3"
    ]
  },
  "referenceLink": "http://www.securityfocus.com/bid/94970",
  "serverity": "\u4e2d",
  "submitTime": "2016-12-21",
  "title": "Samba\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2016-2123 (GCVE-0-2016-2123)

Vulnerability from cvelistv5 – Published: 2018-11-01 13:00 – Updated: 2024-08-05 23:17

Summary

A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation.

Severity

8.1 (High)


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

CWE

CWE-122

Assigner

redhat redhat root

References

4 references

URL	Tags
https://www.samba.org/samba/security/CVE-2016-2123.html	x_refsource_CONFIRM
http://www.securityfocus.com/bid/94970	vdb-entryx_refsource_BID
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
http://www.securitytracker.com/id/1037493	vdb-entryx_refsource_SECTRACK

Impacted products

1 product

Vendor	Product	Version
[UNKNOWN]	samba	Affected: versions 4.0.0 to 4.5.2

Date Public

2016-12-19 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T23:17:50.724Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.samba.org/samba/security/CVE-2016-2123.html"
          },
          {
            "name": "94970",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/94970"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123"
          },
          {
            "name": "1037493",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1037493"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "samba",
          "vendor": "[UNKNOWN]",
          "versions": [
            {
              "status": "affected",
              "version": "versions 4.0.0 to 4.5.2"
            }
          ]
        }
      ],
      "datePublic": "2016-12-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attacker-controlled memory overwrite. ndr_pull_dnsp_name parses data from the Samba Active Directory ldb database. Any user who can write to the dnsRecord attribute over LDAP can trigger this memory corruption. By default, all authenticated LDAP users can write to the dnsRecord attribute on new DNS objects. This makes the defect a remote privilege escalation."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-11-02T09:57:01.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.samba.org/samba/security/CVE-2016-2123.html"
        },
        {
          "name": "94970",
          "tags": [
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            "x_refsource_BID"
          ],
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        },
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          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2123"
        },
        {
          "name": "1037493",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1037493"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2016-2123",
    "datePublished": "2018-11-01T13:00:00.000Z",
    "dateReserved": "2016-01-29T00:00:00.000Z",
    "dateUpdated": "2024-08-05T23:17:50.724Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.