cnvd-2020-49933
Vulnerability from cnvd
Title
Cisco NX-OS拒绝服务漏洞（CNVD-2020-49933）
Description
Cisco NX-OS是适用于Cisco Nexus系列以太网交换机和MDS系列光纤通道存储区域网络交换机的网络操作系统。 Cisco NX-OS的IPv6网络（PIM6）的协议无关组播（PIM）功能存在拒绝服务漏洞。该漏洞源于在处理入站PIM6数据包时错误处理不当。远程未认证攻击者可通过发送多个特制PIM6数据包利用该漏洞导致拒绝服务。
Severity
高
Patch Name
Cisco NX-OS拒绝服务漏洞（CNVD-2020-49933）的补丁
Patch Description
Cisco NX-OS是适用于Cisco Nexus系列以太网交换机和MDS系列光纤通道存储区域网络交换机的网络操作系统。 Cisco NX-OS的IPv6网络（PIM6）的协议无关组播（PIM）功能存在拒绝服务漏洞。该漏洞源于在处理入站PIM6数据包时错误处理不当。远程未认证攻击者可通过发送多个特制PIM6数据包利用该漏洞导致拒绝服务。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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-memleak-dos-tC8eP7uw

Reference
https://nvd.nist.gov/vuln/detail/CVE-2020-3338
Impacted products
Name
Cisco Cisco NX-OS
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3338",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3338"
    }
  },
  "description": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco NX-OS\u7684IPv6\u7f51\u7edc\uff08PIM6\uff09\u7684\u534f\u8bae\u65e0\u5173\u7ec4\u64ad\uff08PIM\uff09\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u5165\u7ad9PIM6\u6570\u636e\u5305\u65f6\u9519\u8bef\u5904\u7406\u4e0d\u5f53\u3002\u8fdc\u7a0b\u672a\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u591a\u4e2a\u7279\u5236PIM6\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-memleak-dos-tC8eP7uw",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-49933",
  "openTime": "2020-09-02",
  "patchDescription": "Cisco NX-OS\u662f\u9002\u7528\u4e8eCisco Nexus\u7cfb\u5217\u4ee5\u592a\u7f51\u4ea4\u6362\u673a\u548cMDS\u7cfb\u5217\u5149\u7ea4\u901a\u9053\u5b58\u50a8\u533a\u57df\u7f51\u7edc\u4ea4\u6362\u673a\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco NX-OS\u7684IPv6\u7f51\u7edc\uff08PIM6\uff09\u7684\u534f\u8bae\u65e0\u5173\u7ec4\u64ad\uff08PIM\uff09\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u5165\u7ad9PIM6\u6570\u636e\u5305\u65f6\u9519\u8bef\u5904\u7406\u4e0d\u5f53\u3002\u8fdc\u7a0b\u672a\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u591a\u4e2a\u7279\u5236PIM6\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\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": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-49933\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Cisco NX-OS"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3338",
  "serverity": "\u9ad8",
  "submitTime": "2020-08-27",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-49933\uff09"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.