Vulnerability-Lookup

CNVD-2019-18857

Vulnerability from cnvd - Published: 2019-06-19

Title

Cisco Email Security Appliance AsyncOS Software远程安全绕过漏洞

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 ESA中的AsyncOS Software的GZIP解压引擎存在远程安全绕过漏洞，该漏洞源于程序未能正确地验证GZIP格式的文件。远程攻击者可借助特制的GZIP压缩文件利用该漏洞绕过所配置的内容过滤器。

Severity

中

Patch Name

Cisco Email Security Appliance AsyncOS Software远程安全绕过漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.cisco.com/

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-esa-bypass

Impacted products

Name
Cisco Email Security Appliance AsyncOS Software

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-1905",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-1905"
    }
  },
  "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 ESA\u4e2d\u7684AsyncOS Software\u7684GZIP\u89e3\u538b\u5f15\u64ce\u5b58\u5728\u8fdc\u7a0b\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u9a8c\u8bc1GZIP\u683c\u5f0f\u7684\u6587\u4ef6\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684GZIP\u538b\u7f29\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u6240\u914d\u7f6e\u7684\u5185\u5bb9\u8fc7\u6ee4\u5668\u3002",
  "discovererName": "Cisco",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.cisco.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-18857",
  "openTime": "2019-06-19",
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  "patchName": "Cisco Email Security Appliance AsyncOS Software\u8fdc\u7a0b\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco Email Security Appliance AsyncOS Software"
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-esa-bypass",
  "serverity": "\u4e2d",
  "submitTime": "2019-06-21",
  "title": "Cisco Email Security Appliance AsyncOS Software\u8fdc\u7a0b\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2019-1905 (GCVE-0-2019-1905)

Vulnerability from cvelistv5 – Published: 2019-06-20 03:10 – Updated: 2024-11-19 19:05

Title

Cisco Email Security Appliance GZIP Content Filter Bypass Vulnerability

Summary

A vulnerability in the GZIP decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper validation of GZIP-formatted files. An attacker could exploit this vulnerability by sending a malicious file inside a crafted GZIP-compressed file. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email.

Severity

5.8 (Medium)


                        
                          CVSS:3.0/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 2024-11-19 17:23 UTC

CWE

CWE-20

Assigner

cisco mitre root

References

2 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO
http://www.securityfocus.com/bid/108856	vdb-entryx_refsource_BID

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Email Security Appliance (ESA)	Affected: 12.0

Date Public

2019-06-19 00:00

Show details on NVD website

JSON

To clipboard

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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          },
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          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "options": [
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                  },
                  {
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            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
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            "scope": "CHANGED",
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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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2019-18857

CVE-2019-1905 (GCVE-0-2019-1905)

Tags

Sightings

Nomenclature

Related by attack behaviour