Vulnerability-Lookup

CNVD-2020-57580

Vulnerability from cnvd - Published: 2020-10-20

Title

Cisco IOS XE文件系统越权访问漏洞

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 XE的文件系统权限存在安全漏洞，该漏洞源于受影响的设备上的文件系统权限不足所致。攻击者可利用该漏洞查看或修改系统管理员通常无法访问的受限信息或配置。

Severity

低

Patch Name

Cisco IOS XE文件系统越权访问漏洞的补丁

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 XE的文件系统权限存在安全漏洞，该漏洞源于受影响的设备上的文件系统权限不足所致。攻击者可利用该漏洞查看或修改系统管理员通常无法访问的受限信息或配置。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-unauth-file-access-eBTWkKVW

Reference

http://www.nsfocus.net/vulndb/49365

Impacted products

Name
Cisco IOS XE

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3503",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3503"
    }
  },
  "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 XE\u7684\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u4e0d\u8db3\u6240\u81f4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u67e5\u770b\u6216\u4fee\u6539\u7cfb\u7edf\u7ba1\u7406\u5458\u901a\u5e38\u65e0\u6cd5\u8bbf\u95ee\u7684\u53d7\u9650\u4fe1\u606f\u6216\u914d\u7f6e\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-unauth-file-access-eBTWkKVW",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-57580",
  "openTime": "2020-10-20",
  "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 XE\u7684\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u4e0d\u8db3\u6240\u81f4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u67e5\u770b\u6216\u4fee\u6539\u7cfb\u7edf\u7ba1\u7406\u5458\u901a\u5e38\u65e0\u6cd5\u8bbf\u95ee\u7684\u53d7\u9650\u4fe1\u606f\u6216\u914d\u7f6e\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\u6587\u4ef6\u7cfb\u7edf\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XE"
  },
  "referenceLink": "http://www.nsfocus.net/vulndb/49365",
  "serverity": "\u4f4e",
  "submitTime": "2020-09-25",
  "title": "Cisco IOS XE\u6587\u4ef6\u7cfb\u7edf\u8d8a\u6743\u8bbf\u95ee\u6f0f\u6d1e"
}

CVE-2020-3503 (GCVE-0-2020-3503)

Vulnerability from cvelistv5 – Published: 2020-09-24 17:51 – Updated: 2024-11-13 17:59

Title

Cisco IOS XE Software Guest Shell Unauthorized File System Access Vulnerability

Summary

A vulnerability in the file system permissions of Cisco IOS XE Software could allow an authenticated, local attacker to obtain read and write access to critical configuration or system files. The vulnerability is due to insufficient file system permissions on an affected device. An attacker could exploit this vulnerability by connecting to an affected device's guest shell, and accessing or modifying restricted files. A successful exploit could allow the attacker to view or modify restricted information or configurations that are normally not accessible to system administrators.

Severity

6 (Medium)


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

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-284

Assigner

cisco mitre root

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

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{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:37:54.441Z",
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        "references": [
          {
            "name": "20200924 Cisco IOS XE Software Guest Shell Unauthorized File System Access Vulnerability",
            "tags": [
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              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unauth-file-access-eBTWkKVW"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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              "content": {
                "id": "CVE-2020-3503",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-13T17:17:49.087453Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "versions": [
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        }
      ],
      "exploits": [
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
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        },
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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.

Detection rules are retrieved from Rulezet.

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.