Vulnerability-Lookup

CNVD-2021-09296

Vulnerability from cnvd - Published: 2021-02-03

Title

Cisco IOS XR拒绝服务漏洞（CNVD-2021-09296）

Description

Cisco IOS XR软件是用于服务提供商网络的模块化和完全分布式的网络操作系统。 Cisco IOS XR的入口数据包处理功能存在拒绝服务漏洞。该漏洞源于受影响的设备处理ICMP或Telnet协议数据包时资源分配不当。攻击者可通过发送特定数据包流利用该漏洞导致enf_broker进程泄漏系统内存，从而会导致enf_broker进程崩溃，并导致系统不稳定以及无法通过受影响的设备处理或转发流量。

Severity

高

Patch Name

Cisco IOS XR拒绝服务漏洞（CNVD-2021-09296）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-iosxr-dos-WwDdghs2

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1313

Impacted products

Name
Cisco IOS XR

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1313",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1313"
    }
  },
  "description": "Cisco IOS XR\u8f6f\u4ef6\u662f\u7528\u4e8e\u670d\u52a1\u63d0\u4f9b\u5546\u7f51\u7edc\u7684\u6a21\u5757\u5316\u548c\u5b8c\u5168\u5206\u5e03\u5f0f\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS XR\u7684\u5165\u53e3\u6570\u636e\u5305\u5904\u7406\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5904\u7406ICMP\u6216Telnet\u534f\u8bae\u6570\u636e\u5305\u65f6\u8d44\u6e90\u5206\u914d\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5b9a\u6570\u636e\u5305\u6d41\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4enf_broker\u8fdb\u7a0b\u6cc4\u6f0f\u7cfb\u7edf\u5185\u5b58\uff0c\u4ece\u800c\u4f1a\u5bfc\u81f4enf_broker\u8fdb\u7a0b\u5d29\u6e83\uff0c\u5e76\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u4ee5\u53ca\u65e0\u6cd5\u901a\u8fc7\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5904\u7406\u6216\u8f6c\u53d1\u6d41\u91cf\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-iosxr-dos-WwDdghs2",
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  "number": "CNVD-2021-09296",
  "openTime": "2021-02-03",
  "patchDescription": "Cisco IOS XR\u8f6f\u4ef6\u662f\u7528\u4e8e\u670d\u52a1\u63d0\u4f9b\u5546\u7f51\u7edc\u7684\u6a21\u5757\u5316\u548c\u5b8c\u5168\u5206\u5e03\u5f0f\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS XR\u7684\u5165\u53e3\u6570\u636e\u5305\u5904\u7406\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5904\u7406ICMP\u6216Telnet\u534f\u8bae\u6570\u636e\u5305\u65f6\u8d44\u6e90\u5206\u914d\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5b9a\u6570\u636e\u5305\u6d41\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4enf_broker\u8fdb\u7a0b\u6cc4\u6f0f\u7cfb\u7edf\u5185\u5b58\uff0c\u4ece\u800c\u4f1a\u5bfc\u81f4enf_broker\u8fdb\u7a0b\u5d29\u6e83\uff0c\u5e76\u5bfc\u81f4\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u4ee5\u53ca\u65e0\u6cd5\u901a\u8fc7\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5904\u7406\u6216\u8f6c\u53d1\u6d41\u91cf\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 XR\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-09296\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XR"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1313",
  "serverity": "\u9ad8",
  "submitTime": "2021-02-04",
  "title": "Cisco IOS XR\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-09296\uff09"
}

CVE-2021-1313 (GCVE-0-2021-1313)

Vulnerability from cvelistv5 – Published: 2021-02-04 16:56 – Updated: 2024-11-08 23:43

Title

Cisco IOS XR Software Enf Broker Denial of Service Vulnerability

Summary

Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Severity

8.6 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:04 UTC

CWE

CWE-399

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 XR Software	Affected: n/a

Date Public

2021-02-03 00:00

Show details on NVD website

JSON

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{
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:02:56.416Z",
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            "name": "20210203 Cisco IOS XR Software Enf Broker Denial of Service Vulnerability",
            "tags": [
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            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dos-WwDdghs2"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "id": "CVE-2021-1313",
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                  {
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:04:19.104055Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2024-11-08T23:43:39.433Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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      "metrics": [
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            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
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            "confidentialityImpact": "NONE",
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      },
      "title": "Cisco IOS XR Software Enf Broker Denial of Service 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.

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.