cnvd - cnvd-2020-50545

cnvd-2020-50545

Vulnerability from cnvd

Title: Fortinet FortiOS SSL VPN授权问题漏洞

Description:

Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。SSL VPN是其中的一个使用安全套接字层协议（SSL）的虚拟私人网络（VPN）组件。

Fortinet FortiOS 6.4.0版本、6.2.0版本至6.2.3版本和6.0.9及之前版本中的SSL VPN存在安全漏洞，该漏洞源于程序未正确进行身份验证。攻击者可通过更改用户名的大小写利用该漏洞绕过第二级的身份验证（FortiToken）。

Severity: 高

Patch Name: Fortinet FortiOS SSL VPN授权问题漏洞的补丁

Patch Description:

Fortinet FortiOS 6.4.0版本、6.2.0版本至6.2.3版本和6.0.9及之前版本中的SSL VPN存在安全漏洞，该漏洞源于程序未正确进行身份验证。攻击者可通过更改用户名的大小写利用该漏洞绕过第二级的身份验证（FortiToken）。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://fortiguard.com/psirt/FG-IR-19-283

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-12812

Impacted products

Name
['Fortinet Fortinet FortiOS <6.0.9', 'Fortinet FortiOS 6.4.0', 'Fortinet FortiOS >=6.2.0，<=6.2.3']

Show details on source website

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12812",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-12812"
    }
  },
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  "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://fortiguard.com/psirt/FG-IR-19-283",
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  "number": "CNVD-2020-50545",
  "openTime": "2020-09-03",
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  "patchName": "Fortinet FortiOS SSL VPN\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Fortinet Fortinet FortiOS \u003c6.0.9",
      "Fortinet FortiOS 6.4.0",
      "Fortinet FortiOS \u003e=6.2.0\uff0c\u003c=6.2.3"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-12812",
  "serverity": "\u9ad8",
  "submitTime": "2020-08-05",
  "title": "Fortinet FortiOS SSL VPN\u6388\u6743\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-12812 (GCVE-0-2020-12812)

Vulnerability from cvelistv5

Published

2020-07-24 22:28

Modified

2025-07-30 01:45

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Improper Access Control

Summary

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

References

▼	URL	Tags
	https://fortiguard.com/psirt/FG-IR-19-283	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	Fortinet FortiOS	Version: FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below

Show details on NVD website

JSON

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              "confidentialityImpact": "HIGH",
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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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