cnvd - cnvd-2020-50288

cnvd-2020-50288

Vulnerability from cnvd

Title: Cisco NX-OS拒绝服务漏洞（CNVD-2020-50288）

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的边界网关协议（BGP）组播VPN（MVPN）实现存在拒绝服务漏洞。该漏洞源于对特定类型的BGP MVPN更新消息的输入验证不完整。远程未认证攻击者可通过发送特定的有效BGP MVPN更新消息利用该漏洞导致系统级重新启动。

Severity: 高

Patch Name: Cisco NX-OS拒绝服务漏洞（CNVD-2020-50288）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的边界网关协议（BGP）组播VPN（MVPN）实现存在拒绝服务漏洞。该漏洞源于对特定类型的BGP MVPN更新消息的输入验证不完整。远程未认证攻击者可通过发送特定的有效BGP MVPN更新消息利用该漏洞导致系统级重新启动。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-nxosbgp-nlri-dos-458rG2OQ

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-3397

Impacted products

Name
Cisco Cisco NX-OS

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2020-3397",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3397"
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  "serverity": "\u9ad8",
  "submitTime": "2020-08-27",
  "title": "Cisco NX-OS\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-50288\uff09"
}

CVE-2020-3397 (GCVE-0-2020-3397)

Vulnerability from cvelistv5

Published

2020-08-27 15:40

Modified

2024-11-13 18:09

Severity ?

8.6 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-20

Summary

A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxosbgp-nlri-dos-458rG2OQ	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco NX-OS Software	Version: n/a

Show details on NVD website

JSON

To clipboard

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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.
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.

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