Vulnerability-Lookup

CNVD-2017-38272

Vulnerability from cnvd - Published: 2017-12-27

Title

libxml2存在未明漏洞（CNVD-2017-38272）

Description

libxml2是GNOME项目组所研发的一个基于C语言的用来解析XML文档的函数库，它支持多种编码格式、Xpath解析、Well-formed和valid验证等。 libxml2 2.9.5之前的版本中的parser.c文件存在安全漏洞，该漏洞源于程序未能正确的处理参数实体的逆向引用。攻击者可利用该漏洞更改xmlParseNameComplex和xmlDictLookup中的输入缓冲区。

Severity

高

Patch Name

libxml2存在未明漏洞（CNVD-2017-38272）的补丁

Patch Description

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://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3

Reference

http://xmlsoft.org/news.html

Impacted products

Name
XMLSoft Libxml2 <2.9.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-16931",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16931"
    }
  },
  "description": "libxml2\u662fGNOME\u9879\u76ee\u7ec4\u6240\u7814\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7684\u7528\u6765\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u7f16\u7801\u683c\u5f0f\u3001Xpath\u89e3\u6790\u3001Well-formed\u548cvalid\u9a8c\u8bc1\u7b49\u3002\r\n\r\nlibxml2 2.9.5\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684parser.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406\u53c2\u6570\u5b9e\u4f53\u7684\u9006\u5411\u5f15\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u66f4\u6539xmlParseNameComplex\u548cxmlDictLookup\u4e2d\u7684\u8f93\u5165\u7f13\u51b2\u533a\u3002",
  "discovererName": "unknow",
  "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://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-38272",
  "openTime": "2017-12-27",
  "patchDescription": "libxml2\u662fGNOME\u9879\u76ee\u7ec4\u6240\u7814\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7684\u7528\u6765\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u7f16\u7801\u683c\u5f0f\u3001Xpath\u89e3\u6790\u3001Well-formed\u548cvalid\u9a8c\u8bc1\u7b49\u3002\r\n\r\nlibxml2 2.9.5\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684parser.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406\u53c2\u6570\u5b9e\u4f53\u7684\u9006\u5411\u5f15\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u66f4\u6539xmlParseNameComplex\u548cxmlDictLookup\u4e2d\u7684\u8f93\u5165\u7f13\u51b2\u533a\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": "libxml2\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2017-38272\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "XMLSoft Libxml2 \u003c2.9.5"
  },
  "referenceLink": "http://xmlsoft.org/news.html",
  "serverity": "\u9ad8",
  "submitTime": "2017-11-27",
  "title": "libxml2\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2017-38272\uff09"
}

CVE-2017-16931 (GCVE-0-2017-16931)

Vulnerability from cvelistv5 – Published: 2017-11-23 21:00 – Updated: 2026-10-14 06:30

Summary

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2325 records in the last 180 days details

References

6 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2017…	mailing-listx_refsource_MLIST
https://www.oracle.com//security-alerts/cpujul2021.html	x_refsource_MISC
https://bugzilla.gnome.org/show_bug.cgi?id=766956	x_refsource_CONFIRM
http://xmlsoft.org/news.html	x_refsource_CONFIRM
https://github.com/GNOME/libxml2/commit/e26630548…	x_refsource_CONFIRM
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)

Date Public

2017-11-23 00:00

Show details on NVD website

JSON

To clipboard

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          {
            "name": "[debian-lts-announce] 20171130 [SECURITY] [DLA 1194-1] libxml2 security update",
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          },
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            ],
            "url": "http://xmlsoft.org/news.html"
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            "url": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3"
          }
        ],
        "title": "CVE Program Container"
      },
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            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
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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.

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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.
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