Vulnerability-Lookup

CNVD-2020-57581

Vulnerability from cnvd - Published: 2020-10-20

Title

Cisco IOS XE同意令牌绕过漏洞（CNVD-2020-57581）

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 IOS XE的持久性Telnet/Secure Shell (SSH) CLI存在同意令牌绕过漏洞。该漏洞源于在授权Shell访问中同意令牌的强制执行不足。攻击者可利用该漏洞获得shell访问权限并在底层操作系统上以root权限执行命令。

Severity

高

Patch Name

Cisco IOS XE同意令牌绕过漏洞（CNVD-2020-57581）的补丁

Patch Description

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-iosxe-ctbypass-7QHAfHkK

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3404

Impacted products

Name
Cisco IOS XE

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3404",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3404"
    }
  },
  "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 IOS XE\u7684\u6301\u4e45\u6027Telnet/Secure Shell (SSH) CLI\u5b58\u5728\u540c\u610f\u4ee4\u724c\u7ed5\u8fc7\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6388\u6743Shell\u8bbf\u95ee\u4e2d\u540c\u610f\u4ee4\u724c\u7684\u5f3a\u5236\u6267\u884c\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97shell\u8bbf\u95ee\u6743\u9650\u5e76\u5728\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u4ee5root\u6743\u9650\u6267\u884c\u547d\u4ee4\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-57581",
  "openTime": "2020-10-20",
  "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 IOS XE\u7684\u6301\u4e45\u6027Telnet/Secure Shell (SSH) CLI\u5b58\u5728\u540c\u610f\u4ee4\u724c\u7ed5\u8fc7\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6388\u6743Shell\u8bbf\u95ee\u4e2d\u540c\u610f\u4ee4\u724c\u7684\u5f3a\u5236\u6267\u884c\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97shell\u8bbf\u95ee\u6743\u9650\u5e76\u5728\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u4ee5root\u6743\u9650\u6267\u884c\u547d\u4ee4\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\u540c\u610f\u4ee4\u724c\u7ed5\u8fc7\u6f0f\u6d1e\uff08CNVD-2020-57581\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XE"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3404",
  "serverity": "\u9ad8",
  "submitTime": "2020-09-25",
  "title": "Cisco IOS XE\u540c\u610f\u4ee4\u724c\u7ed5\u8fc7\u6f0f\u6d1e\uff08CNVD-2020-57581\uff09"
}

CVE-2020-3404 (GCVE-0-2020-3404)

Vulnerability from cvelistv5 – Published: 2020-09-24 18:02 – Updated: 2024-11-13 17:54

Title

Cisco IOS XE Software Consent Token Bypass Vulnerability

Summary

A vulnerability in the persistent Telnet/Secure Shell (SSH) CLI of Cisco IOS XE Software could allow an authenticated, local attacker to gain shell access on an affected device and execute commands on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient enforcement of the consent token in authorizing shell access. An attacker could exploit this vulnerability by authenticating to the persistent Telnet/SSH CLI on an affected device and requesting shell access. A successful exploit could allow the attacker to gain shell access on the affected device and execute commands on the underlying OS with root privileges.

Severity

6.7 (Medium)


                        
                          CVSS:3.0/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-863

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

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:30:58.170Z",
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        "references": [
          {
            "name": "20200924 Cisco IOS XE Software Consent Token Bypass Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ctbypass-7QHAfHkK"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2020-3404",
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                  },
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                  },
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                  }
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                "version": "2.0.3"
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        }
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      "metrics": [
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            "attackVector": "LOCAL",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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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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Action not permitted

CNVD-2020-57581

CVE-2020-3404 (GCVE-0-2020-3404)

Tags

Sightings

Nomenclature

Related by attack behaviour