Vulnerability-Lookup

CNVD-2020-38064

Vulnerability from cnvd - Published: 2020-07-10

Title

Cisco IOS和IOS XE代码问题漏洞

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 Catalyst 4500 Series中的IOS Software和IOS XE Software的Simple Network Management Protocol (SNMP)子系统存在代码问题漏洞，该漏洞源于在处理特定的SNMP对象标识符时程序没有充分验证输入。攻击者可通过将特制的SNMP数据包发送到受影响的设备利用该漏洞重新加载受影响的设备，进而导致拒绝服务。

Severity

中

Patch Name

Cisco IOS和IOS XE代码问题漏洞的补丁

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-snmp-dos-USxSyTk5

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3235

Impacted products

Name
Cisco Catalyst 4500 Series

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3235"
    }
  },
  "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 Catalyst 4500 Series\u4e2d\u7684IOS Software\u548cIOS XE Software\u7684Simple Network Management Protocol (SNMP)\u5b50\u7cfb\u7edf\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u7279\u5b9a\u7684SNMP\u5bf9\u8c61\u6807\u8bc6\u7b26\u65f6\u7a0b\u5e8f\u6ca1\u6709\u5145\u5206\u9a8c\u8bc1\u8f93\u5165\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236\u7684SNMP\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u91cd\u65b0\u52a0\u8f7d\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\uff0c\u8fdb\u800c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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-snmp-dos-USxSyTk5",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-38064",
  "openTime": "2020-07-10",
  "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 Catalyst 4500 Series\u4e2d\u7684IOS Software\u548cIOS XE Software\u7684Simple Network Management Protocol (SNMP)\u5b50\u7cfb\u7edf\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5904\u7406\u7279\u5b9a\u7684SNMP\u5bf9\u8c61\u6807\u8bc6\u7b26\u65f6\u7a0b\u5e8f\u6ca1\u6709\u5145\u5206\u9a8c\u8bc1\u8f93\u5165\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236\u7684SNMP\u6570\u636e\u5305\u53d1\u9001\u5230\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u91cd\u65b0\u52a0\u8f7d\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\uff0c\u8fdb\u800c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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\u548cIOS XE\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Catalyst 4500 Series"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3235",
  "serverity": "\u4e2d",
  "submitTime": "2020-06-04",
  "title": "Cisco IOS\u548cIOS XE\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-3235 (GCVE-0-2020-3235)

Vulnerability from cvelistv5 – Published: 2020-06-03 17:55 – Updated: 2024-11-15 17:11

Title

Cisco IOS and IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability

Summary

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.

Severity

7.7 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-15 16:27 UTC

CWE

CWE-118

Assigner

cisco mitre root Scorecard

References

2 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
https://www.oracle.com/security-alerts/cpuoct2020.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco IOS 12.2(53)SG1	Affected: n/a

Date Public

2020-06-03 00:00

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
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        "references": [
          {
            "name": "20200603 Cisco IOS and IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability",
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          },
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        "metrics": [
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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.

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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CNVD-2020-38064

CVE-2020-3235 (GCVE-0-2020-3235)

Tags

Sightings

Nomenclature

Related by attack behaviour