Vulnerability-Lookup

CNVD-2020-50502

Vulnerability from cnvd - Published: 2020-09-03

Title

Samba资源管理错误漏洞（CNVD-2020-50502）

Description

Samba是Samba团队的一套可使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 4.10.17之前版本、4.11.11之前版本和4.12.4之前版本中通过TCP/IP处理NetBios的方式存在资源管理错误漏洞。攻击者可借助NBT和DNS数据包利用该漏洞占用大量CPU，导致拒绝服务。

Severity

高

Patch Name

Samba资源管理错误漏洞（CNVD-2020-50502）的补丁

Patch Description

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://www.samba.org/samba/security/CVE-2020-10745.html

Reference

https://packetstormsecurity.com/files/158286/Ubuntu-Security-Notice-USN-4409-1.html

Impacted products

Name
['Samba Samba <4.10.17', 'Samba Samba <4.11.11', 'Samba Samba <4.12.4']

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2020-10745"
    }
  },
  "description": "Samba\u662fSamba\u56e2\u961f\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\n\nSamba 4.10.17\u4e4b\u524d\u7248\u672c\u30014.11.11\u4e4b\u524d\u7248\u672c\u548c4.12.4\u4e4b\u524d\u7248\u672c\u4e2d\u901a\u8fc7TCP/IP\u5904\u7406NetBios\u7684\u65b9\u5f0f\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9NBT\u548cDNS\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5360\u7528\u5927\u91cfCPU\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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://www.samba.org/samba/security/CVE-2020-10745.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-50502",
  "openTime": "2020-09-03",
  "patchDescription": "Samba\u662fSamba\u56e2\u961f\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 4.10.17\u4e4b\u524d\u7248\u672c\u30014.11.11\u4e4b\u524d\u7248\u672c\u548c4.12.4\u4e4b\u524d\u7248\u672c\u4e2d\u901a\u8fc7TCP/IP\u5904\u7406NetBios\u7684\u65b9\u5f0f\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9NBT\u548cDNS\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5360\u7528\u5927\u91cfCPU\uff0c\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\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2020-50502\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Samba Samba \u003c4.10.17",
      "Samba Samba \u003c4.11.11",
      "Samba Samba \u003c4.12.4"
    ]
  },
  "referenceLink": "https://packetstormsecurity.com/files/158286/Ubuntu-Security-Notice-USN-4409-1.html",
  "serverity": "\u9ad8",
  "submitTime": "2020-07-03",
  "title": "Samba\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2020-50502\uff09"
}

CVE-2020-10745 (GCVE-0-2020-10745)

Vulnerability from cvelistv5 – Published: 2020-07-07 13:33 – Updated: 2024-08-04 11:14

Summary

A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.

Severity

No CVSS data available.

CWE

Uncontrolled Resource Consumption

Assigner

redhat redhat root

References

8 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1849491%3B	x_refsource_MISC
https://www.samba.org/samba/security/CVE-2020-107…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/202007-15	vendor-advisoryx_refsource_GENTOO
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	Samba	Affected: All Samba versions before 4.10.17, before 4.11.11 and before 4.12.4

Show details on NVD website

JSON

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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.