Vulnerability-Lookup

CNVD-2020-57579

Vulnerability from cnvd - Published: 2020-10-20

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

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

To clipboard

{
  "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",
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  "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 – Updated: 2024-11-13 17:52

Title

Cisco Email Security Appliance URL Filtering Bypass Vulnerability

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.

Severity

5.8 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-13 17:12 UTC

CWE

CWE-20

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 395 records in the last 180 days details

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 Email Security Appliance (ESA)	Affected: n/a

Date Public

2020-10-07 00:00

Show details on NVD website

JSON

To clipboard

{
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T07:37:55.458Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "name": "20201007 Cisco Email Security Appliance URL Filtering Bypass Vulnerability",
            "tags": [
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              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-url-bypass-zZtugtg3"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "id": "CVE-2020-3568",
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                  {
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-13T17:12:34.051182Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2024-11-13T17:52:26.932Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "product": "Cisco Email Security Appliance (ESA)",
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          "versions": [
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      ],
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        }
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      "exploits": [
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          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
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        "dateUpdated": "2020-10-08T04:20:43.000Z",
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      },
      "references": [
        {
          "name": "20201007 Cisco Email Security Appliance URL Filtering Bypass Vulnerability",
          "tags": [
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        }
      ],
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        },
        "affects": {
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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.

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.

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Action not permitted

CNVD-2020-57579

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

Tags

Sightings

Nomenclature

Related by attack behaviour