Vulnerability-Lookup

CNVD-2017-16034

Vulnerability from cnvd - Published: 2017-07-24

Title

Expat XML外部实体拒绝服务漏洞

Description

Expat是一个以C语言编写的面向流的XML解析器库。 Expat XML外部实体拒绝服务漏洞。该漏洞源于Expat的entityValueInitProcessor函数存在外部实体中的畸形XML，攻击者可以利用该漏洞导致拒绝服务。

Severity

中

Patch Name

Expat XML外部实体拒绝服务漏洞的补丁

Patch Description

Expat是一个以C语言编写的面向流的XML解析器库。 Expat XML外部实体拒绝服务漏洞。该漏洞源于Expat的entityValueInitProcessor函数存在外部实体中的畸形XML，攻击者可以利用该漏洞导致拒绝服务。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

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://github.com/libexpat/libexpat/commit/c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1462729 http://www.securityfocus.com/bid/99276

Impacted products

Name
Expat Expat <=2.2

Show details on source website

JSON

To clipboard

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      "cveNumber": "CVE-2017-9233"
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  "description": "Expat\u662f\u4e00\u4e2a\u4ee5C\u8bed\u8a00\u7f16\u5199\u7684\u9762\u5411\u6d41\u7684XML\u89e3\u6790\u5668\u5e93\u3002\r\n\r\nExpat XML\u5916\u90e8\u5b9e\u4f53\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eExpat\u7684entityValueInitProcessor\u51fd\u6570\u5b58\u5728\u5916\u90e8\u5b9e\u4f53\u4e2d\u7684\u7578\u5f62XML\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Rhodri James",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttps://github.com/libexpat/libexpat/commit/c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-16034",
  "openTime": "2017-07-24",
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  "patchName": "Expat XML\u5916\u90e8\u5b9e\u4f53\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
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  "serverity": "\u4e2d",
  "submitTime": "2017-06-27",
  "title": "Expat XML\u5916\u90e8\u5b9e\u4f53\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-9233 (GCVE-0-2017-9233)

Vulnerability from cvelistv5 – Published: 2017-07-25 20:00 – Updated: 2024-08-05 17:02

Summary

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

13 references

URL	Tags
https://support.apple.com/HT208144	x_refsource_CONFIRM
https://libexpat.github.io/doc/cve-2017-9233/	x_refsource_CONFIRM
https://github.com/libexpat/libexpat/blob/master/…	x_refsource_CONFIRM
http://www.securitytracker.com/id/1039427	vdb-entryx_refsource_SECTRACK
https://support.apple.com/HT208113	x_refsource_CONFIRM
https://support.apple.com/HT208112	x_refsource_CONFIRM
https://support.apple.com/HT208115	x_refsource_CONFIRM
http://www.debian.org/security/2017/dsa-3898	vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/99276	vdb-entryx_refsource_BID
http://www.openwall.com/lists/oss-security/2017/06/17/7	mailing-listx_refsource_MLIST
https://support.f5.com/csp/article/K03244804	x_refsource_CONFIRM
https://lists.apache.org/thread.html/rf4c02775860…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r58af02e294b…	mailing-listx_refsource_MLIST

Date Public

2017-06-17 00:00

Show details on NVD website

JSON

To clipboard

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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-2017-16034

CVE-2017-9233 (GCVE-0-2017-9233)

Tags

Sightings

Nomenclature

Related by attack behaviour