Vulnerability-Lookup

CNVD-2019-08294

Vulnerability from cnvd - Published: 2019-03-28

Title

Samba拒绝服务漏洞（CNVD-2019-08294）

Description

Samba是在Linux和UNIX系统上实现SMB协议的一个免费软件，由服务器及客户端程序构成。 Samba存在拒绝服务的漏洞，攻击者可利用该漏洞造成拒绝服务（空指针逆向引用）。

Severity

低

Patch Name

Samba拒绝服务漏洞（CNVD-2019-08294）的补丁

Patch Description

Samba是在Linux和UNIX系统上实现SMB协议的一个免费软件，由服务器及客户端程序构成。 Samba存在拒绝服务的漏洞，攻击者可利用该漏洞造成拒绝服务（空指针逆向引用）。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://www.samba.org/samba/security/CVE-2018-16852.html

Reference

https://www.securityfocus.com/bid/106024,http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16852

Impacted products

Name
Samba Samba >=4.9.0，<4.9.3

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "106024"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-16852"
    }
  },
  "description": "Samba\u662f\u5728Linux\u548cUNIX\u7cfb\u7edf\u4e0a\u5b9e\u73b0SMB\u534f\u8bae\u7684\u4e00\u4e2a\u514d\u8d39\u8f6f\u4ef6\uff0c\u7531\u670d\u52a1\u5668\u53ca\u5ba2\u6237\u7aef\u7a0b\u5e8f\u6784\u6210\u3002\n\nSamba\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u7684\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "Isaac Boukris, Fabrizio Faganello",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.samba.org/samba/security/CVE-2018-16852.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-08294",
  "openTime": "2019-03-28",
  "patchDescription": "Samba\u662f\u5728Linux\u548cUNIX\u7cfb\u7edf\u4e0a\u5b9e\u73b0SMB\u534f\u8bae\u7684\u4e00\u4e2a\u514d\u8d39\u8f6f\u4ef6\uff0c\u7531\u670d\u52a1\u5668\u53ca\u5ba2\u6237\u7aef\u7a0b\u5e8f\u6784\u6210\u3002\r\n\r\nSamba\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u7684\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\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": "Samba\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2019-08294\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Samba Samba \u003e=4.9.0\uff0c\u003c4.9.3"
  },
  "referenceLink": "https://www.securityfocus.com/bid/106024,http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16852",
  "serverity": "\u4f4e",
  "submitTime": "2018-11-28",
  "title": "Samba\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2019-08294\uff09"
}

CVE-2018-16852 (GCVE-0-2018-16852)

Vulnerability from cvelistv5 – Published: 2018-11-28 14:00 – Updated: 2024-08-05 10:32

Summary

Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.

Severity

6.5 (Medium)


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

CWE

CWE-476

Assigner

redhat redhat root

References

5 references

URL	Tags
https://www.samba.org/samba/security/CVE-2018-168…	x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2018112…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/106024	vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/202003-52	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
[UNKNOWN]	samba	Affected: 4.9.3

Date Public

2018-11-27 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T10:32:54.124Z",
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          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "versions": [
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      "descriptions": [
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          "lang": "en",
          "value": "Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service."
        }
      ],
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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            "privilegesRequired": "LOW",
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        "dateUpdated": "2020-03-25T18:06:07.000Z",
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        },
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          "tags": [
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          ],
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        }
      ],
      "x_legacyV4Record": {
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}

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.