cnvd - cnvd-2018-06598

cnvd-2018-06598

Vulnerability from cnvd

Title: util-linux权限提升漏洞

Description:

util-linux是一套用在Linux系统中并包含了多种系统管理工具的软件包，它提供加载、卸载、格式化、分区和管理硬盘驱动器，打开tty端口并得到内核消息等工具。

util-linux 2.32-rc1之前版本中的bash-completion/umount存在安全漏洞。本地攻击者可通过在mountpoint名称中注入shell命令利用该漏洞获取权限。

Severity: 高

Patch Name: util-linux权限提升漏洞的补丁

Patch Description:

util-linux 2.32-rc1之前版本中的bash-completion/umount存在安全漏洞。本地攻击者可通过在mountpoint名称中注入shell命令利用该漏洞获取权限。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:

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55

Reference: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892179

Impacted products

Name
util-linux util-linux <2.32-rc1

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "103367"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-7738"
    }
  },
  "description": "util-linux\u662f\u4e00\u5957\u7528\u5728Linux\u7cfb\u7edf\u4e2d\u5e76\u5305\u542b\u4e86\u591a\u79cd\u7cfb\u7edf\u7ba1\u7406\u5de5\u5177\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u63d0\u4f9b\u52a0\u8f7d\u3001\u5378\u8f7d\u3001\u683c\u5f0f\u5316\u3001\u5206\u533a\u548c\u7ba1\u7406\u786c\u76d8\u9a71\u52a8\u5668\uff0c\u6253\u5f00tty\u7aef\u53e3\u5e76\u5f97\u5230\u5185\u6838\u6d88\u606f\u7b49\u5de5\u5177\u3002\r\n\r\nutil-linux 2.32-rc1\u4e4b\u524d\u7248\u672c\u4e2d\u7684bash-completion/umount\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728mountpoint\u540d\u79f0\u4e2d\u6ce8\u5165shell\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Bj\u00c3\u00b6rn Bosselmann",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-06598",
  "openTime": "2018-03-28",
  "patchDescription": "util-linux\u662f\u4e00\u5957\u7528\u5728Linux\u7cfb\u7edf\u4e2d\u5e76\u5305\u542b\u4e86\u591a\u79cd\u7cfb\u7edf\u7ba1\u7406\u5de5\u5177\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u63d0\u4f9b\u52a0\u8f7d\u3001\u5378\u8f7d\u3001\u683c\u5f0f\u5316\u3001\u5206\u533a\u548c\u7ba1\u7406\u786c\u76d8\u9a71\u52a8\u5668\uff0c\u6253\u5f00tty\u7aef\u53e3\u5e76\u5f97\u5230\u5185\u6838\u6d88\u606f\u7b49\u5de5\u5177\u3002\r\n\r\nutil-linux 2.32-rc1\u4e4b\u524d\u7248\u672c\u4e2d\u7684bash-completion/umount\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728mountpoint\u540d\u79f0\u4e2d\u6ce8\u5165shell\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\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": "util-linux\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "util-linux util-linux \u003c2.32-rc1"
  },
  "referenceLink": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892179",
  "serverity": "\u9ad8",
  "submitTime": "2018-03-07",
  "title": "util-linux\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2018-7738 (GCVE-0-2018-7738)

Vulnerability from cvelistv5

Published

2018-03-06 22:00

Modified

2024-12-13 13:09

Severity ?

CWE

Summary

In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.

References

▼	URL	Tags
	https://github.com/karelzak/util-linux/issues/539	x_refsource_MISC
	https://www.debian.org/security/2018/dsa-4134	vendor-advisory, x_refsource_DEBIAN
	http://www.securityfocus.com/bid/103367	vdb-entry, x_refsource_BID
	https://bugs.debian.org/892179	x_refsource_MISC
	https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55	x_refsource_MISC
	https://usn.ubuntu.com/4512-1/	vendor-advisory, x_refsource_UBUNTU

Impacted products

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

Show details on NVD website

JSON

To clipboard

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          },
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          },
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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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