cnvd - cnvd-2021-68727

cnvd-2021-68727

Vulnerability from cnvd

Title: Cisco NX-OS Software拒绝服务漏洞（CNVD-2021-68727）

Description:

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。

Cisco NX-OS Software的system login block-for命令的实现存在拒绝服务漏洞，攻击者可通过执行暴力登录攻击利用该漏洞登录进程重新加载，从而可导致拒绝服务。

Severity: 中

Patch Name: Cisco NX-OS Software拒绝服务漏洞（CNVD-2021-68727）的补丁

Patch Description:

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。

Cisco NX-OS Software的system login block-for命令的实现存在拒绝服务漏洞，攻击者可通过执行暴力登录攻击利用该漏洞登录进程重新加载，从而可导致拒绝服务。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-login-blockfor-RwjGVEcu

Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-login-blockfor-RwjGVEcu

Impacted products

Name
Cisco NX-OS Software

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1590",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1590"
    }
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  "number": "CNVD-2021-68727",
  "openTime": "2021-09-07",
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  "patchName": "Cisco NX-OS Software\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-68727\uff09\u7684\u8865\u4e01",
  "products": {
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  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-login-blockfor-RwjGVEcu",
  "serverity": "\u4e2d",
  "submitTime": "2021-08-26",
  "title": "Cisco NX-OS Software\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-68727\uff09"
}

CVE-2021-1590 (GCVE-0-2021-1590)

Vulnerability from cvelistv5

Published

2021-08-25 19:11

Modified

2024-11-07 22:02

Severity ?

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-787

Summary

A vulnerability in the implementation of the system login block-for command for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a login process to unexpectedly restart, causing a denial of service (DoS) condition. This vulnerability is due to a logic error in the implementation of the system login block-for command when an attack is detected and acted upon. An attacker could exploit this vulnerability by performing a brute-force login attack on an affected device. A successful exploit could allow the attacker to cause a login process to reload, which could result in a delay during authentication to the affected device.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-login-blockfor-RwjGVEcu	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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