Vulnerability-Lookup

CNVD-2020-16628

Vulnerability from cnvd - Published: 2020-03-10

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

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  "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 – Updated: 2024-08-04 19:47

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.

Severity

No CVSS data available.

CWE

stack buffer

Assigner

talos mitre root

References

1 reference

URL	Tags
https://talosintelligence.com/vulnerability_repor…	x_refsource_MISC

Impacted products

1 product

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

Show details on NVD website

JSON

To clipboard

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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T19:47:56.736Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "Wago",
          "vendor": "n/a",
          "versions": [
            {
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              "version": "WAGO PFC200 Firmware version 03.02.02(14)"
            }
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          "lang": "en",
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
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              "type": "text"
            }
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      "providerMetadata": {
        "dateUpdated": "2020-03-23T13:19:22.000Z",
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        "shortName": "talos"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0966"
        }
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        "CVE_data_meta": {
          "ASSIGNER": "talos-cna@cisco.com",
          "ID": "CVE-2019-5186",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Wago",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "WAGO PFC200 Firmware version 03.02.02(14)"
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              "value": "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=\u003ccontents of interface element\u003e 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."
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  "cveMetadata": {
    "assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
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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.