cnvd - cnvd-2021-09295

cnvd-2021-09295

Vulnerability from cnvd

Title: Cisco IOS XR拒绝服务漏洞（CNVD-2021-09295）

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IPv6协议处理存在拒绝服务漏洞。该漏洞源于该软件未正确转发具有IPv6节点本地多播组地址目标并在管理界面上接收的IPv6数据包。攻击者可利用该漏洞导致网络性能下降或拒绝服务。

Severity: 中

Patch Name: Cisco IOS XR拒绝服务漏洞（CNVD-2021-09295）的补丁

Patch 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IPv6协议处理存在拒绝服务漏洞。该漏洞源于该软件未正确转发具有IPv6节点本地多播组地址目标并在管理界面上接收的IPv6数据包。攻击者可利用该漏洞导致网络性能下降或拒绝服务。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:

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-xripv6-spJem78K

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-1268

Impacted products

Name
Cisco IOS XR

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1268",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1268"
    }
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  "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\u7684IPv6\u534f\u8bae\u5904\u7406\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8be5\u8f6f\u4ef6\u672a\u6b63\u786e\u8f6c\u53d1\u5177\u6709IPv6\u8282\u70b9\u672c\u5730\u591a\u64ad\u7ec4\u5730\u5740\u76ee\u6807\u5e76\u5728\u7ba1\u7406\u754c\u9762\u4e0a\u63a5\u6536\u7684IPv6\u6570\u636e\u5305\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7f51\u7edc\u6027\u80fd\u4e0b\u964d\u6216\u62d2\u7edd\u670d\u52a1\u3002",
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  "number": "CNVD-2021-09295",
  "openTime": "2021-02-05",
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  "products": {
    "product": "Cisco IOS XR"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1268",
  "serverity": "\u4e2d",
  "submitTime": "2021-02-04",
  "title": "Cisco IOS XR\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-09295\uff09"
}

CVE-2021-1268 (GCVE-0-2021-1268)

Vulnerability from cvelistv5

Published

2021-02-04 16:35

Modified

2024-11-08 23:54

Severity ?

7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-1076

Summary

A vulnerability in the IPv6 protocol handling of the management interfaces of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause an IPv6 flood on the management interface network of an affected device. The vulnerability exists because the software incorrectly forwards IPv6 packets that have an IPv6 node-local multicast group address destination and are received on the management interfaces. An attacker could exploit this vulnerability by connecting to the same network as the management interfaces and injecting IPv6 packets that have an IPv6 node-local multicast group address destination. A successful exploit could allow the attacker to cause an IPv6 flood on the corresponding network. Depending on the number of Cisco IOS XR Software nodes on that network segment, exploitation could cause excessive network traffic, resulting in network degradation or a denial of service (DoS) condition.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xripv6-spJem78K	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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