cnvd - cnvd-2017-27728

cnvd-2017-27728

Vulnerability from cnvd

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

Modified

2024-08-05 18:28

Severity ?

CWE

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.

References

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

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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