Vulnerability-Lookup

CNVD-2016-11324

Vulnerability from cnvd - Published: 2016-11-21

Title

XMLSec Libxml2 XXE漏洞

Description

XMLSec是一个基于C语言用于实现XML安全标准的库。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。 XMLSec 1.2.23及之前的版本和其他产品中使用的Libxml2 2.9.4及之前的版本中存在安全漏洞。远程攻击者可借助特制的文档利用该漏洞实施XML External Entity (XXE)攻击。

Severity

中

Patch Name

XMLSec Libxml2 XXE漏洞的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： https://github.com/lsh123/xmlsec/issues/43

Reference

https://bugzilla.gnome.org/show_bug.cgi?id=772726

Impacted products

Name
XMLSoft Libxml2 <=2.9.4

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "94347"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-9318"
    }
  },
  "description": "XMLSec\u662f\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7528\u4e8e\u5b9e\u73b0XML\u5b89\u5168\u6807\u51c6\u7684\u5e93\u3002Libxml2\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\u3002\r\n\r\nXMLSec 1.2.23\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c\u5176\u4ed6\u4ea7\u54c1\u4e2d\u4f7f\u7528\u7684Libxml2 2.9.4\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u6587\u6863\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdXML External Entity (XXE)\u653b\u51fb\u3002",
  "discovererName": "Aleksey Sanin",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/lsh123/xmlsec/issues/43",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-11324",
  "openTime": "2016-11-21",
  "patchDescription": "XMLSec\u662f\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7528\u4e8e\u5b9e\u73b0XML\u5b89\u5168\u6807\u51c6\u7684\u5e93\u3002Libxml2\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\u3002\r\n\r\nXMLSec 1.2.23\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c\u5176\u4ed6\u4ea7\u54c1\u4e2d\u4f7f\u7528\u7684Libxml2 2.9.4\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u6587\u6863\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdXML External Entity (XXE)\u653b\u51fb\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": "XMLSec Libxml2 XXE\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "XMLSoft Libxml2 \u003c=2.9.4"
  },
  "referenceLink": "https://bugzilla.gnome.org/show_bug.cgi?id=772726",
  "serverity": "\u4e2d",
  "submitTime": "2016-11-16",
  "title": "XMLSec Libxml2 XXE\u6f0f\u6d1e"
}

CVE-2016-9318 (GCVE-0-2016-9318)

Vulnerability from cvelistv5 – Published: 2016-11-16 00:00 – Updated: 2025-12-04 16:39

Summary

libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-04 16:39 UTC

CWE

n/a
CWE-611 - Improper Restriction of XML External Entity Reference

Assigner

mitre mitre root

References

7 references

URL	Tags
https://bugzilla.gnome.org/show_bug.cgi?id=772726	x_refsource_MISC
https://github.com/lsh123/xmlsec/issues/43	x_refsource_MISC
https://usn.ubuntu.com/3739-1/	vendor-advisoryx_refsource_UBUNTU
https://security.gentoo.org/glsa/201711-01	vendor-advisoryx_refsource_GENTOO
http://www.securityfocus.com/bid/94347	vdb-entryx_refsource_BID
https://usn.ubuntu.com/3739-2/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Date Public

2016-11-15 00:00

Show details on NVD website

JSON

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        "metrics": [
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              "confidentialityImpact": "HIGH",
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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.

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-2016-11324

CVE-2016-9318 (GCVE-0-2016-9318)

Tags

Sightings

Nomenclature

Related by attack behaviour