Vulnerability-Lookup

CNVD-2021-43443

Vulnerability from cnvd - Published: 2021-06-20

Title

Cisco IOS XE任意代码执行漏洞（CNVD-2021-43443）

Description

Cisco IOS XE是美国Cisco公司为其网络设备开发的一套基于Linux内核的模块化操作系统。 Cisco ASR 900系列聚合服务路由器使用的Cisco IOS XE的初始化例程存在任意代码执行漏洞，攻击者可通过将特定文件复制到受影响设备的本地文件系统并定义特定的ROMMON变量利用该漏洞在底层操作系统以root权限运行任意代码。

Severity

中

Patch Name

Cisco IOS XE任意代码执行漏洞（CNVD-2021-43443）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-iosxe-rsp3-rce-jVHg8Z7c

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-rsp3-rce-jVHg8Z7c

Impacted products

Name
Cisco IOS XE

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3416",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3416"
    }
  },
  "description": "Cisco IOS XE\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u57fa\u4e8eLinux\u5185\u6838\u7684\u6a21\u5757\u5316\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco ASR 900\u7cfb\u5217\u805a\u5408\u670d\u52a1\u8def\u7531\u5668\u4f7f\u7528\u7684Cisco IOS XE\u7684\u521d\u59cb\u5316\u4f8b\u7a0b\u5b58\u5728\u4efb\u610f\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5b9a\u6587\u4ef6\u590d\u5236\u5230\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u5e76\u5b9a\u4e49\u7279\u5b9a\u7684ROMMON\u53d8\u91cf\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u4ee5root\u6743\u9650\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\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-iosxe-rsp3-rce-jVHg8Z7c",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-43443",
  "openTime": "2021-06-20",
  "patchDescription": "Cisco IOS XE\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u57fa\u4e8eLinux\u5185\u6838\u7684\u6a21\u5757\u5316\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco ASR 900\u7cfb\u5217\u805a\u5408\u670d\u52a1\u8def\u7531\u5668\u4f7f\u7528\u7684Cisco IOS XE\u7684\u521d\u59cb\u5316\u4f8b\u7a0b\u5b58\u5728\u4efb\u610f\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5b9a\u6587\u4ef6\u590d\u5236\u5230\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u5e76\u5b9a\u4e49\u7279\u5b9a\u7684ROMMON\u53d8\u91cf\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u4ee5root\u6743\u9650\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\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 XE\u4efb\u610f\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff08CNVD-2021-43443\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XE"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-rsp3-rce-jVHg8Z7c",
  "serverity": "\u4e2d",
  "submitTime": "2020-09-25",
  "title": "Cisco IOS XE\u4efb\u610f\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff08CNVD-2021-43443\uff09"
}

CVE-2020-3416 (GCVE-0-2020-3416)

Vulnerability from cvelistv5 – Published: 2020-09-24 18:01 – Updated: 2024-11-13 17:55

Title

Cisco IOS XE Software for Cisco ASR 900 Series Route Switch Processor 3 Arbitrary Code Execution Vulnerabilities

Summary

Multiple vulnerabilities in the initialization routines that are executed during bootup of Cisco IOS XE Software for Cisco ASR 900 Series Aggregation Services Routers with a Route Switch Processor 3 (RSP3) installed could allow an authenticated, local attacker with high privileges to execute persistent code at bootup and break the chain of trust. These vulnerabilities are due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. An attacker could exploit these vulnerabilities by copying a specific file to the local file system of an affected device and defining specific ROMMON variables. A successful exploit could allow the attacker to run arbitrary code on the underlying operating system (OS) with root privileges. To exploit these vulnerabilities, an attacker would need to have access to the root shell on the device or have physical access to the device.

Severity

6.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-13 17:17 UTC

CWE

CWE-749

Assigner

cisco mitre root Scorecard

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 XE Software	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": "2024-08-04T07:30:58.670Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20200924 Cisco IOS XE Software for Cisco ASR 900 Series Route Switch Processor 3 Arbitrary Code Execution Vulnerabilities",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-rsp3-rce-jVHg8Z7c"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-3416",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-13T17:17:44.728512Z",
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        ],
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
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          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
      "datePublic": "2020-09-24T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
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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 vulnerabilities that are described in this advisory."
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      "metrics": [
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            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
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        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XE Software for Cisco ASR 900 Series Route Switch Processor 3 Arbitrary Code Execution Vulnerabilities",
      "x_legacyV4Record": {
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    "state": "PUBLISHED"
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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.

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.

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CNVD-2021-43443

CVE-2020-3416 (GCVE-0-2020-3416)

Tags

Sightings

Nomenclature

Related by attack behaviour