cnvd - cnvd-2020-16628

cnvd-2020-16628

Vulnerability from cnvd

Title: WAGO PFC 200缓冲区溢出漏洞（CNVD-2020-16628）

Description:

WAGO PFC 200是德国WAGO公司的一款可编程逻辑控制器（PLC）。

WAGO PFC 200中的iocheckd服务的I/O-Check功能存在缓冲区溢出漏洞。攻击者可借助特制的xml缓存文件利用该漏洞造成拒绝服务或可能执行代码。

Severity: 高

Formal description:

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法：

https://www.wago.com/

Reference: https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966

Impacted products

Name
WAGO PFC 200

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-5186"
    }
  },
  "description": "WAGO PFC 200\u662f\u5fb7\u56fdWAGO\u516c\u53f8\u7684\u4e00\u6b3e\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff08PLC\uff09\u3002\n\nWAGO PFC 200\u4e2d\u7684iocheckd\u670d\u52a1\u7684I/O-Check\u529f\u80fd\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684xml\u7f13\u5b58\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u53ef\u80fd\u6267\u884c\u4ee3\u7801\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\n\r\nhttps://www.wago.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-16628",
  "openTime": "2020-03-10",
  "products": {
    "product": "WAGO PFC 200"
  },
  "referenceLink": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966",
  "serverity": "\u9ad8",
  "submitTime": "2020-03-10",
  "title": "WAGO PFC 200\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2020-16628\uff09"
}

CVE-2019-5186 (GCVE-0-2019-5186)

Vulnerability from cvelistv5

Published

2020-03-23 13:19

Modified

2024-08-04 19:47

Severity ?

CWE

stack buffer

Summary

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. An attacker can send a specially crafted packet to trigger the parsing of this cache file.At 0x1eb9c the extracted interface element name from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=<contents of interface element> using sprintf(). The destination buffer sp+0x40 is overflowed with the call to sprintf() for any interface values that are greater than 512-len("/etc/config-tools/config_interfaces interface=") in length. Later, at 0x1ea08 strcpy() is used to copy the contents of the stack buffer that was overflowed sp+0x40 into sp+0x440. The buffer sp+0x440 is immediately adjacent to sp+0x40 on the stack. Therefore, there is no NULL termination on the buffer sp+0x40 since it overflowed into sp+0x440. The strcpy() will result in invalid memory access. An interface value of length 0x3c4 will cause the service to crash.

References

▼	URL	Tags
	https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	Wago	Version: WAGO PFC200 Firmware version 03.02.02(14)

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-04T19:47:56.736Z",
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            "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966"
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        }
      ],
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        "dateUpdated": "2020-03-23T13:19:22",
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          "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966"
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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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