Vulnerability-Lookup

CNVD-2021-43448

Vulnerability from cnvd - Published: 2021-06-20

Title

Cisco IOS越权访问漏洞

Description

Cisco IOS是美国Cisco公司为其网络设备开发的操作维护系统，用户通过命令行人机界面对网络设备进行功能设置。 Cisco 800系列工业集成多业务路由器和1000系列互联网格路由器使用的Cisco IOS的低功耗广域（LPWA）子系统存在越权访问漏洞，攻击者可通过提供特制数据包利用该漏洞越权读访问敏感数据或导致VLPWA接口关闭。

Severity

中

Patch Name

Cisco IOS越权访问漏洞的补丁

Patch Description

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-ios-lpwa-access-cXsD7PRA

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lpwa-access-cXsD7PRA

Impacted products

Name
Cisco IOS XE

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3426",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3426"
    }
  },
  "description": "Cisco IOS\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7ef4\u62a4\u7cfb\u7edf\uff0c\u7528\u6237\u901a\u8fc7\u547d\u4ee4\u884c\u4eba\u673a\u754c\u9762\u5bf9\u7f51\u7edc\u8bbe\u5907\u8fdb\u884c\u529f\u80fd\u8bbe\u7f6e\u3002\n\nCisco 800\u7cfb\u5217\u5de5\u4e1a\u96c6\u6210\u591a\u4e1a\u52a1\u8def\u7531\u5668\u548c1000\u7cfb\u5217\u4e92\u8054\u7f51\u683c\u8def\u7531\u5668\u4f7f\u7528\u7684Cisco IOS\u7684\u4f4e\u529f\u8017\u5e7f\u57df\uff08LPWA\uff09\u5b50\u7cfb\u7edf\u5b58\u5728\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4f9b\u7279\u5236\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u8d8a\u6743\u8bfb\u8bbf\u95ee\u654f\u611f\u6570\u636e\u6216\u5bfc\u81f4VLPWA\u63a5\u53e3\u5173\u95ed\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-ios-lpwa-access-cXsD7PRA",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-43448",
  "openTime": "2021-06-20",
  "patchDescription": "Cisco IOS\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7ef4\u62a4\u7cfb\u7edf\uff0c\u7528\u6237\u901a\u8fc7\u547d\u4ee4\u884c\u4eba\u673a\u754c\u9762\u5bf9\u7f51\u7edc\u8bbe\u5907\u8fdb\u884c\u529f\u80fd\u8bbe\u7f6e\u3002\r\n\r\nCisco 800\u7cfb\u5217\u5de5\u4e1a\u96c6\u6210\u591a\u4e1a\u52a1\u8def\u7531\u5668\u548c1000\u7cfb\u5217\u4e92\u8054\u7f51\u683c\u8def\u7531\u5668\u4f7f\u7528\u7684Cisco IOS\u7684\u4f4e\u529f\u8017\u5e7f\u57df\uff08LPWA\uff09\u5b50\u7cfb\u7edf\u5b58\u5728\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4f9b\u7279\u5236\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u8d8a\u6743\u8bfb\u8bbf\u95ee\u654f\u611f\u6570\u636e\u6216\u5bfc\u81f4VLPWA\u63a5\u53e3\u5173\u95ed\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\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XE"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lpwa-access-cXsD7PRA",
  "serverity": "\u4e2d",
  "submitTime": "2020-09-25",
  "title": "Cisco IOS\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e"
}

CVE-2020-3426 (GCVE-0-2020-3426)

Vulnerability from cvelistv5 – Published: 2020-09-24 18:01 – Updated: 2024-11-13 17:56

Title

Cisco IOS Software for Cisco Industrial Routers Virtual-LPWA Unauthorized Access Vulnerability

Summary

A vulnerability in the implementation of the Low Power, Wide Area (LPWA) subsystem of Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data or cause a denial of service (DoS) condition. The vulnerability is due to a lack of input and validation checking mechanisms for virtual-LPWA (VLPWA) protocol modem messages. An attacker could exploit this vulnerability by supplying crafted packets to an affected device. A successful exploit could allow the attacker to gain unauthorized read access to sensitive data or cause the VLPWA interface of the affected device to shut down, resulting in DoS condition.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-13 17:12 UTC

CWE

CWE-264

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 434 records in the last 180 days details

References

1 reference

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco IOS 15.2(6)E4	Affected: n/a

Date Public

2020-09-24 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:30:58.415Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "name": "20200924 Cisco IOS Software for Cisco Industrial Routers  Virtual-LPWA  Unauthorized Access Vulnerability",
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            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lpwa-access-cXsD7PRA"
          }
        ],
        "title": "CVE Program Container"
      },
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        "metrics": [
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            "other": {
              "content": {
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                  },
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "vendor": "Cisco",
          "versions": [
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              "status": "affected",
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      ],
      "datePublic": "2020-09-24T00:00:00.000Z",
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      "metrics": [
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            "confidentialityImpact": "HIGH",
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      "title": "Cisco IOS Software for Cisco Industrial Routers  Virtual-LPWA  Unauthorized Access Vulnerability",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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