cnvd - cnvd-2021-49774

cnvd-2021-49774

Vulnerability from cnvd

Title: MikroTik RouterOS内存破坏漏洞（CNVD-2021-49774）

Description:

MikroTik RouterOS是一套基于Linux开发的路由器操作系统。

MikroTik RouterOS /nova/bin/dot1x存在内存破坏漏洞，允许远程攻击者利用漏洞提交特殊的请求，可使应用程序崩溃，进行拒绝服务攻击。

Severity: 中

Patch Name: MikroTik RouterOS内存破坏漏洞（CNVD-2021-49774）的补丁

Patch Description:

MikroTik RouterOS是一套基于Linux开发的路由器操作系统。

MikroTik RouterOS /nova/bin/dot1x存在内存破坏漏洞，允许远程攻击者利用漏洞提交特殊的请求，可使应用程序崩溃，进行拒绝服务攻击。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:

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://mikrotik.com/download/changelogs/stable-release-tree

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-20266

Impacted products

Name
MicroTik RouterOS <6.47

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-20266",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-20266"
    }
  },
  "description": "MikroTik RouterOS\u662f\u4e00\u5957\u57fa\u4e8eLinux\u5f00\u53d1\u7684\u8def\u7531\u5668\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nMikroTik RouterOS /nova/bin/dot1x\u5b58\u5728\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff0c\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u4f7f\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff0c\u8fdb\u884c\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttps://mikrotik.com/download/changelogs/stable-release-tree",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-49774",
  "openTime": "2021-07-12",
  "patchDescription": "MikroTik RouterOS\u662f\u4e00\u5957\u57fa\u4e8eLinux\u5f00\u53d1\u7684\u8def\u7531\u5668\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nMikroTik RouterOS /nova/bin/dot1x\u5b58\u5728\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff0c\u5141\u8bb8\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u4f7f\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff0c\u8fdb\u884c\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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": "MikroTik RouterOS\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff08CNVD-2021-49774\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "MicroTik RouterOS \u003c6.47"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-20266",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-01",
  "title": "MikroTik RouterOS\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff08CNVD-2021-49774\uff09"
}

CVE-2020-20266 (GCVE-0-2020-20266)

Vulnerability from cvelistv5

Published

2021-05-19 11:20

Modified

2024-08-04 14:15

Severity ?

CWE

Summary

Mikrotik RouterOs before 6.47 (stable tree) suffers from a memory corruption vulnerability in the /nova/bin/dot1x process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference).

References

▼	URL	Tags
	https://github.com/cq674350529/pocs_slides/blob/master/pocs/MikroTik/vul_dot1x/README.md	x_refsource_MISC
	https://seclists.org/fulldisclosure/2021/May/11	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	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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