cnvd - cnvd-2021-99644

CNVD-2021-99644

Vulnerability from cnvd - Published: 2021-12-11

Title

Cisco Email Security Appliance拒绝服务漏洞

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。 Cisco Email Security Appliance存在拒绝服务漏洞，该漏洞源于传入邮件的输入验证不足造成的。攻击者可利用该漏洞对受影响的设备执行拒绝服务(DoS)攻击。

Severity

中

Patch Name

Cisco Email Security Appliance拒绝服务漏洞的补丁

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。 Cisco Email Security Appliance存在拒绝服务漏洞，该漏洞源于传入邮件的输入验证不足造成的。攻击者可利用该漏洞对受影响的设备执行拒绝服务(DoS)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

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-esa-dos-JOm9ETfO

Reference

https://www.auscert.org.au/bulletins/ESB-2021.3673

Impacted products

Name
['Cisco Email Security Appliance <13.0.4', 'Cisco Email Security Appliance <13.5.4-031', 'Cisco Email Security Appliance <14.0.0']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-34741",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-34741"
    }
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  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-JOm9ETfO",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-99644",
  "openTime": "2021-12-11",
  "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\u3002\r\n\r\nCisco Email Security Appliance\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4f20\u5165\u90ae\u4ef6\u7684\u8f93\u5165\u9a8c\u8bc1\u4e0d\u8db3\u9020\u6210\u7684\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bf9\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u6267\u884c\u62d2\u7edd\u670d\u52a1(DoS)\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": "Cisco Email Security Appliance\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco Email Security Appliance \u003c13.0.4",
      "Cisco Email Security Appliance \u003c13.5.4-031",
      "Cisco Email Security Appliance \u003c14.0.0"
    ]
  },
  "referenceLink": "https://www.auscert.org.au/bulletins/ESB-2021.3673",
  "serverity": "\u4e2d",
  "submitTime": "2021-11-05",
  "title": "Cisco Email Security Appliance\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2021-34741 (GCVE-0-2021-34741)

Vulnerability from cvelistv5 – Published: 2021-11-04 15:40 – Updated: 2024-11-07 21:44

Summary

A vulnerability in the email scanning algorithm of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation of incoming emails. An attacker could exploit this vulnerability by sending a crafted email through Cisco ESA. A successful exploit could allow the attacker to exhaust all the available CPU resources on an affected device for an extended period of time, preventing other emails from being processed and resulting in a DoS condition.

Severity ?

7.5 (High)


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

CWE

CWE-770

Assigner

cisco

References

URL

Tags

https://tools.cisco.com/security/center/content/C…

vendor-advisoryx_refsource_CISCO

Impacted products

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

Show details on NVD website

JSON

To clipboard

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              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-JOm9ETfO"
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        "title": "CVE Program Container"
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                "role": "CISA Coordinator",
                "timestamp": "2024-11-07T21:44:16.445690Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "vendor": "Cisco",
          "versions": [
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2021-99644

CVE-2021-34741 (GCVE-0-2021-34741)

Tags

Sightings

Nomenclature