Vulnerability-Lookup

CNVD-2019-41669

Vulnerability from cnvd - Published: 2019-11-21

Title

ZyXEL GS1900存在未明漏洞（CNVD-2019-41669）

Description

ZyXEL GS1900是中国台湾合勤（ZyXEL）公司的一款管理型交换机。使用2.50(AAHH.0)C0之前版本固件的Zyxel GS1900中存在安全漏洞。攻击者可利用该漏洞访问受限的功能。

Severity

中

Patch Name

ZyXEL GS1900存在未明漏洞（CNVD-2019-41669）的补丁

Patch Description

ZyXEL GS1900是中国台湾合勤（ZyXEL）公司的一款管理型交换机。使用2.50(AAHH.0)C0之前版本固件的Zyxel GS1900中存在安全漏洞。攻击者可利用该漏洞访问受限的功能。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://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-15803

Impacted products

Name
ZyXEL GS1900 <2.50(AAHH.0)C0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-15803"
    }
  },
  "description": "ZyXEL GS1900\u662f\u4e2d\u56fd\u53f0\u6e7e\u5408\u52e4\uff08ZyXEL\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7ba1\u7406\u578b\u4ea4\u6362\u673a\u3002\n\n\u4f7f\u75282.50(AAHH.0)C0\u4e4b\u524d\u7248\u672c\u56fa\u4ef6\u7684Zyxel GS1900\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u53d7\u9650\u7684\u529f\u80fd\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://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-41669",
  "openTime": "2019-11-21",
  "patchDescription": "ZyXEL GS1900\u662f\u4e2d\u56fd\u53f0\u6e7e\u5408\u52e4\uff08ZyXEL\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7ba1\u7406\u578b\u4ea4\u6362\u673a\u3002\r\n\r\n\u4f7f\u75282.50(AAHH.0)C0\u4e4b\u524d\u7248\u672c\u56fa\u4ef6\u7684Zyxel GS1900\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u53d7\u9650\u7684\u529f\u80fd\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": "ZyXEL GS1900\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2019-41669\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "ZyXEL   GS1900 \u003c2.50(AAHH.0)C0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-15803",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-19",
  "title": "ZyXEL GS1900\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2019-41669\uff09"
}

CVE-2019-15803 (GCVE-0-2019-15803)

Vulnerability from cvelistv5 – Published: 2019-11-14 20:15 – Updated: 2024-08-05 00:56

Summary

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Through an undocumented sequence of keypresses, undocumented functionality is triggered. A diagnostics shell is triggered via CTRL-ALT-t, which prompts for the password returned by fds_sys_passDebugPasswd_ret(). The firmware contains access control checks that determine if remote users are allowed to access this functionality. The function that performs this check (fds_sys_remoteDebugEnable_ret in libfds.so) always return TRUE with no actual checks performed. The diagnostics menu allows for reading/writing arbitrary registers and various other configuration parameters which are believed to be related to the network interface chips.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://jasper.la/exploring-zyxel-gs1900-firmware…	x_refsource_MISC
https://www.zyxel.com/support/gs1900-switch-vulne…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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            "url": "https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
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            ],
            "url": "https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml"
          }
        ],
        "title": "CVE Program Container"
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        },
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          ],
          "url": "https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml"
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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.