cnvd - cnvd-2019-43820

cnvd-2019-43820

Vulnerability from cnvd

Title: Cisco IOS XR访问控制错误漏洞

Description:

Cisco IOS XR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 XR 6.5.1版本和6.5.2版本中的NETCONF over Secure Shell (SSH) 的访问控制逻辑存在访问控制错误漏洞，该漏洞源于NETCONF over SSH访问列表缺少安检查。攻击者可利用该漏洞连接到设备上。

Severity: 中

Patch Name: Cisco IOS XR访问控制错误漏洞的补丁

Patch Description:

Cisco IOS XR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 XR 6.5.1版本和6.5.2版本中的NETCONF over Secure Shell (SSH) 的访问控制逻辑存在访问控制错误漏洞，该漏洞源于NETCONF over SSH访问列表缺少安检查。攻击者可利用该漏洞连接到设备上。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-20191120-iosxr-ssh-bypass

Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-iosxr-ssh-bypass

Impacted products

Name
['Cisco IOS XR 6.5.2', 'Cisco IOS XR 6.5.1']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-15998"
    }
  },
  "description": "Cisco IOS XR\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 XR 6.5.1\u7248\u672c\u548c6.5.2\u7248\u672c\u4e2d\u7684NETCONF over Secure Shell (SSH) \u7684\u8bbf\u95ee\u63a7\u5236\u903b\u8f91\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eNETCONF over SSH\u8bbf\u95ee\u5217\u8868\u7f3a\u5c11\u5b89\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8fde\u63a5\u5230\u8bbe\u5907\u4e0a\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-20191120-iosxr-ssh-bypass",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-43820",
  "openTime": "2019-12-04",
  "patchDescription": "Cisco IOS XR\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 XR 6.5.1\u7248\u672c\u548c6.5.2\u7248\u672c\u4e2d\u7684NETCONF over Secure Shell (SSH) \u7684\u8bbf\u95ee\u63a7\u5236\u903b\u8f91\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eNETCONF over SSH\u8bbf\u95ee\u5217\u8868\u7f3a\u5c11\u5b89\u68c0\u67e5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8fde\u63a5\u5230\u8bbe\u5907\u4e0a\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 XR\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco IOS XR    6.5.2",
      "Cisco IOS XR    6.5.1"
    ]
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-iosxr-ssh-bypass",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-21",
  "title": "Cisco IOS XR\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2019-15998 (GCVE-0-2019-15998)

Vulnerability from cvelistv5

Published

2019-11-26 03:41

Modified

2024-11-19 18:51

Severity ?

5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-284

Summary

A vulnerability in the access-control logic of the NETCONF over Secure Shell (SSH) of Cisco IOS XR Software may allow connections despite an access control list (ACL) that is configured to deny access to the NETCONF over SSH of an affected device. The vulnerability is due to a missing check in the NETCONF over SSH access control list (ACL). An attacker could exploit this vulnerability by connecting to an affected device using NETCONF over SSH. A successful exploit could allow the attacker to connect to the device on the NETCONF port. Valid credentials are required to access the device. This vulnerability does not affect connections to the default SSH process on the device.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-iosxr-ssh-bypass	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Version: unspecified < n/a

Show details on NVD website

JSON

To clipboard

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          }
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      "metrics": [
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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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