cnvd - cnvd-2020-57579

cnvd-2020-57579

Vulnerability from cnvd

Title: Cisco Email Security Appliance URL过滤绕过漏洞

Description:

Cisco Email Security Appliance（ESA）是美国思科（Cisco）公司的一个电子邮件安全设备。AsyncOS Software是运行在其中的一套操作系统。

Cisco Email Security Appliance使用的Cisco AsyncOS的反垃圾邮件保护机制存在URL过滤绕过漏洞。该漏洞源于对URL输入验证不足。攻击者可通过特制URL利用该漏洞绕过URL信誉过滤器。

Severity: 中

Patch Name: Cisco Email Security Appliance URL过滤绕过漏洞的补丁

Patch Description:

Cisco Email Security Appliance（ESA）是美国思科（Cisco）公司的一个电子邮件安全设备。AsyncOS Software是运行在其中的一套操作系统。

Cisco Email Security Appliance使用的Cisco AsyncOS的反垃圾邮件保护机制存在URL过滤绕过漏洞。该漏洞源于对URL输入验证不足。攻击者可通过特制URL利用该漏洞绕过URL信誉过滤器。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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-url-bypass-zZtugtg3

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-3568

Impacted products

Name
Cisco Email Security Appliance AsyncOS Software <=13.5.2

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3568",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3568"
    }
  },
  "description": "Cisco Email Security Appliance\uff08ESA\uff09\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7535\u5b50\u90ae\u4ef6\u5b89\u5168\u8bbe\u5907\u3002AsyncOS Software\u662f\u8fd0\u884c\u5728\u5176\u4e2d\u7684\u4e00\u5957\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco Email Security Appliance\u4f7f\u7528\u7684Cisco AsyncOS\u7684\u53cd\u5783\u573e\u90ae\u4ef6\u4fdd\u62a4\u673a\u5236\u5b58\u5728URL\u8fc7\u6ee4\u7ed5\u8fc7\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9URL\u8f93\u5165\u9a8c\u8bc1\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236URL\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7URL\u4fe1\u8a89\u8fc7\u6ee4\u5668\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-esa-url-bypass-zZtugtg3",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-57579",
  "openTime": "2020-10-20",
  "patchDescription": "Cisco Email Security Appliance\uff08ESA\uff09\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7535\u5b50\u90ae\u4ef6\u5b89\u5168\u8bbe\u5907\u3002AsyncOS Software\u662f\u8fd0\u884c\u5728\u5176\u4e2d\u7684\u4e00\u5957\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco Email Security Appliance\u4f7f\u7528\u7684Cisco AsyncOS\u7684\u53cd\u5783\u573e\u90ae\u4ef6\u4fdd\u62a4\u673a\u5236\u5b58\u5728URL\u8fc7\u6ee4\u7ed5\u8fc7\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9URL\u8f93\u5165\u9a8c\u8bc1\u4e0d\u8db3\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236URL\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7URL\u4fe1\u8a89\u8fc7\u6ee4\u5668\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 Email Security Appliance URL\u8fc7\u6ee4\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Email Security Appliance AsyncOS Software \u003c=13.5.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3568",
  "serverity": "\u4e2d",
  "submitTime": "2020-10-09",
  "title": "Cisco Email Security Appliance URL\u8fc7\u6ee4\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2020-3568 (GCVE-0-2020-3568)

Vulnerability from cvelistv5

Published

2020-10-08 04:20

Modified

2024-11-13 17:52

Severity ?

5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CWE

CWE-20

Summary

A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. The vulnerability is due to insufficient input validation of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for the affected device, which could allow malicious URLs to pass through the device.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-url-bypass-zZtugtg3	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco Email Security Appliance (ESA)	Version: n/a

Show details on NVD website

JSON

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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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