cnvd - cnvd-2019-06579

cnvd-2019-06579

Vulnerability from cnvd

Title: Linux Kernel本地权限提升漏洞（CNVD-2019-06579）

Description:

Linux是一款开放源代码的操作系统，是一类Unix计算机操作系统的统称。

Linux Kernel存在本地权限提升漏洞。攻击者可利用该漏洞获取权限。

Severity: 中

Patch Name: Linux Kernel本地权限提升漏洞（CNVD-2019-06579）的补丁

Patch Description:

Linux是一款开放源代码的操作系统，是一类Unix计算机操作系统的统称。

Linux Kernel存在本地权限提升漏洞。攻击者可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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd

Reference: https://www.exploit-db.com/exploits/45886

Impacted products

Name
Linux Kernel

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "105941"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-18955"
    }
  },
  "description": "Linux\u662f\u4e00\u6b3e\u5f00\u653e\u6e90\u4ee3\u7801\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u662f\u4e00\u7c7bUnix\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u7684\u7edf\u79f0\u3002\n\nLinux Kernel\u5b58\u5728\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Jann Horn",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5:\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-06579",
  "openTime": "2019-03-08",
  "patchDescription": "Linux\u662f\u4e00\u6b3e\u5f00\u653e\u6e90\u4ee3\u7801\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u662f\u4e00\u7c7bUnix\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u7684\u7edf\u79f0\u3002\r\n\r\nLinux Kernel\u5b58\u5728\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\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": "Linux Kernel\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-06579\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel"
  },
  "referenceLink": "https://www.exploit-db.com/exploits/45886",
  "serverity": "\u4e2d",
  "submitTime": "2018-11-19",
  "title": "Linux Kernel\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-06579\uff09"
}

CVE-2018-18955 (GCVE-0-2018-18955)

Vulnerability from cvelistv5

Published

2018-11-16 20:00

Modified

2024-08-05 11:23

Severity ?

CWE

Summary

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction.

References

▼	URL	Tags
	https://github.com/torvalds/linux/commit/d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd	x_refsource_MISC
	https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.19	x_refsource_MISC
	https://usn.ubuntu.com/3836-2/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3835-1/	vendor-advisory, x_refsource_UBUNTU
	https://bugs.chromium.org/p/project-zero/issues/detail?id=1712	x_refsource_MISC
	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd	x_refsource_MISC
	https://usn.ubuntu.com/3833-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3832-1/	vendor-advisory, x_refsource_UBUNTU
	https://www.exploit-db.com/exploits/45915/	exploit, x_refsource_EXPLOIT-DB
	https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.2	x_refsource_MISC
	https://www.exploit-db.com/exploits/45886/	exploit, x_refsource_EXPLOIT-DB
	https://usn.ubuntu.com/3836-1/	vendor-advisory, x_refsource_UBUNTU
	http://www.securityfocus.com/bid/105941	vdb-entry, x_refsource_BID
	https://support.f5.com/csp/article/K39103040	x_refsource_CONFIRM
	https://security.netapp.com/advisory/ntap-20190416-0003/	x_refsource_CONFIRM

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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          ],
          "url": "https://security.netapp.com/advisory/ntap-20190416-0003/"
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  },
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  "dataVersion": "5.1"
}

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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