cnvd - cnvd-2020-22323

cnvd-2020-22323

Vulnerability from cnvd

Title: Cisco IOS XR授权问题漏洞

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存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。攻击者可利用该漏洞获得未经授权的访问、执行意外操作并造成拒绝服务情况。

Severity: 中

Patch Name: Cisco IOS XR授权问题漏洞的补丁

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存在授权问题漏洞。该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。攻击者可利用该漏洞获得未经授权的访问、执行意外操作并造成拒绝服务情况。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-20190605-iosxr-ssh

Reference: https://nvd.nist.gov/vuln/detail/CVE-2019-1842

Impacted products

Name
Cisco IOS XR

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "108687"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-1842",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1842"
    }
  },
  "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\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u4e2d\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u63aa\u65bd\u6216\u8eab\u4efd\u9a8c\u8bc1\u5f3a\u5ea6\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3001\u6267\u884c\u610f\u5916\u64cd\u4f5c\u5e76\u9020\u6210\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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-20190605-iosxr-ssh",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-22323",
  "openTime": "2020-04-12",
  "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\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u4e2d\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u63aa\u65bd\u6216\u8eab\u4efd\u9a8c\u8bc1\u5f3a\u5ea6\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3001\u6267\u884c\u610f\u5916\u64cd\u4f5c\u5e76\u9020\u6210\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XR"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-1842",
  "serverity": "\u4e2d",
  "submitTime": "2019-06-14",
  "title": "Cisco IOS XR\u6388\u6743\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2019-1842 (GCVE-0-2019-1842)

Vulnerability from cvelistv5

Published

2019-06-05 16:20

Modified

2024-11-21 19:23

Severity ?

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

CWE

CWE-285

Summary

A vulnerability in the Secure Shell (SSH) authentication function of Cisco IOS XR Software could allow an authenticated, remote attacker to successfully log in to an affected device using two distinct usernames. The vulnerability is due to a logic error that may occur when certain sequences of actions are processed during an SSH login event on the affected device. An attacker could exploit this vulnerability by initiating an SSH session to the device with a specific sequence that presents the two usernames. A successful exploit could result in logging data misrepresentation, user enumeration, or, in certain circumstances, a command authorization bypass. See the Details section for more information.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190605-iosxr-ssh	vendor-advisory, x_refsource_CISCO
	http://www.securityfocus.com/bid/108687	vdb-entry, x_refsource_BID

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Version: unspecified < 6.1.4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "providerMetadata": {
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        "references": [
          {
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            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190605-iosxr-ssh"
          },
          {
            "name": "108687",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/108687"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-1842",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-21T18:58:16.687085Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XR Software",
          "vendor": "Cisco",
          "versions": [
            {
              "lessThan": "6.1.4",
              "status": "affected",
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      ],
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        }
      ],
      "exploits": [
        {
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          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
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        },
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      ],
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      },
      "title": "Cisco IOS XR Software Secure Shell Authentication Vulnerability",
      "x_legacyV4Record": {
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                      "version": {
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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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