cnvd - cnvd-2020-31826

cnvd-2020-31826

Vulnerability from cnvd

Title: Cisco IOS和IOS XE拒绝服务漏洞（CNVD-2020-31826）

Description:

Cisco IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。

Cisco IOS Software和Cisco IOS XE Software中的Secure Shell（SSH）服务器代码存在安全漏洞，该漏洞源于SSH状态机未正确表示内部状态。攻击者可通过建立与受影响设备的SSH连接利用该漏洞导致拒绝服务。

Severity: 中

Patch Name: Cisco IOS和IOS XE拒绝服务漏洞（CNVD-2020-31826）的补丁

Patch Description:

Cisco IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。

Cisco IOS Software和Cisco IOS XE Software中的Secure Shell（SSH）服务器代码存在安全漏洞，该漏洞源于SSH状态机未正确表示内部状态。攻击者可通过建立与受影响设备的SSH连接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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssh-dos-Un22sd2A

Impacted products

Name
['Cisco IOS Software', 'Cisco IOS XE Software']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3200"
    }
  },
  "description": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS Software\u548cCisco IOS XE Software\u4e2d\u7684Secure Shell\uff08SSH\uff09\u670d\u52a1\u5668\u4ee3\u7801\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eSSH\u72b6\u6001\u673a\u672a\u6b63\u786e\u8868\u793a\u5185\u90e8\u72b6\u6001\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u4e0e\u53d7\u5f71\u54cd\u8bbe\u5907\u7684SSH\u8fde\u63a5\u5229\u7528\u8be5\u6f0f\u6d1e\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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssh-dos-Un22sd2A",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-31826",
  "openTime": "2020-06-08",
  "patchDescription": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS Software\u548cCisco IOS XE Software\u4e2d\u7684Secure Shell\uff08SSH\uff09\u670d\u52a1\u5668\u4ee3\u7801\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eSSH\u72b6\u6001\u673a\u672a\u6b63\u786e\u8868\u793a\u5185\u90e8\u72b6\u6001\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u4e0e\u53d7\u5f71\u54cd\u8bbe\u5907\u7684SSH\u8fde\u63a5\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 IOS\u548cIOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-31826\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco IOS Software",
      "Cisco IOS XE Software"
    ]
  },
  "serverity": "\u4e2d",
  "submitTime": "2020-06-04",
  "title": "Cisco IOS\u548cIOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2020-31826\uff09"
}

CVE-2020-3200 (GCVE-0-2020-3200)

Vulnerability from cvelistv5

Published

2020-06-03 17:45

Modified

2024-11-15 17:12

Severity ?

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

CWE

CWE-371

Summary

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssh-dos-Un22sd2A	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS 12.2(58)SE	Version: n/a

Show details on NVD website

JSON

To clipboard

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          }
        ],
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        },
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    ],
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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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