Vulnerability-Lookup

CNVD-2017-27728

Vulnerability from cnvd - Published: 2017-09-21

Title

GNU C Library DNS欺骗漏洞

Description

GNU C Library（又名glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C Library 2.26之前的版本中的DNS stub resolver存在安全漏洞。攻击者可利用该漏洞实施off-path DNS欺骗攻击。

Severity

中

Patch Name

GNU C Library DNS欺骗漏洞的补丁

Patch Description

GNU C Library（又名glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C Library 2.26之前的版本中的DNS stub resolver存在安全漏洞。攻击者可利用该漏洞实施off-path DNS欺骗攻击。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

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.gnu.org/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-12132

Impacted products

Name
GNU glibc <2.26

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-12132"
    }
  },
  "description": "GNU C Library\uff08\u53c8\u540dglibc\uff0clibc6\uff09\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u3002\r\n\r\nGNU C Library 2.26\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684DNS stub resolver\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdoff-path DNS\u6b3a\u9a97\u653b\u51fb\u3002",
  "discovererName": "unknwon",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.gnu.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-27728",
  "openTime": "2017-09-21",
  "patchDescription": "GNU C Library\uff08\u53c8\u540dglibc\uff0clibc6\uff09\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u3002\r\n\r\nGNU C Library 2.26\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684DNS stub resolver\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bdoff-path DNS\u6b3a\u9a97\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": "GNU C Library DNS\u6b3a\u9a97\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GNU glibc \u003c2.26"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-12132",
  "serverity": "\u4e2d",
  "submitTime": "2017-08-02",
  "title": "GNU C Library DNS\u6b3a\u9a97\u6f0f\u6d1e"
}

CVE-2017-12132 (GCVE-0-2017-12132)

Vulnerability from cvelistv5 – Published: 2017-08-01 16:00 – Updated: 2024-08-05 18:28

Summary

The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://arxiv.org/pdf/1205.4011.pdf	x_refsource_MISC
http://www.securityfocus.com/bid/100598	vdb-entryx_refsource_BID
https://sourceware.org/bugzilla/show_bug.cgi?id=21361	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:0805	vendor-advisoryx_refsource_REDHAT

Date Public

2017-08-01 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.

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.