cnvd - cnvd-2017-37876

cnvd-2017-37876

Vulnerability from cnvd

Title: Linux kernel KEYS子系统密钥漏洞

Description:

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。KEYS subsystem是其中的一套密钥子系统。

Linux kernel 4.14.6之前的版本中的KEYS子系统存在密钥漏洞，该漏洞源于程序未能进程访问控制检测。本地攻击者可利用该漏洞将密钥添加到只有搜索权限的密钥环中。

Severity: 中

Patch Name: Linux kernel KEYS子系统密钥漏洞的补丁

Patch Description:

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。KEYS subsystem是其中的一套密钥子系统。

Linux kernel 4.14.6之前的版本中的KEYS子系统存在密钥漏洞，该漏洞源于程序未能进程访问控制检测。本地攻击者可利用该漏洞将密钥添加到只有搜索权限的密钥环中。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=4dca6ea1d9432052afb06baf2e3ae78188a4410b

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b

Impacted products

Name
Linux kernel <4.14.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-17807"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KEYS subsystem\u662f\u5176\u4e2d\u7684\u4e00\u5957\u5bc6\u94a5\u5b50\u7cfb\u7edf\u3002\r\n\r\nLinux kernel 4.14.6\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684KEYS\u5b50\u7cfb\u7edf\u5b58\u5728\u5bc6\u94a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u7a0b\u8bbf\u95ee\u63a7\u5236\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5bc6\u94a5\u6dfb\u52a0\u5230\u53ea\u6709\u641c\u7d22\u6743\u9650\u7684\u5bc6\u94a5\u73af\u4e2d\u3002",
  "discovererName": "Eric Biggers",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-37876",
  "openTime": "2017-12-22",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KEYS subsystem\u662f\u5176\u4e2d\u7684\u4e00\u5957\u5bc6\u94a5\u5b50\u7cfb\u7edf\u3002\r\n\r\nLinux kernel 4.14.6\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684KEYS\u5b50\u7cfb\u7edf\u5b58\u5728\u5bc6\u94a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u7a0b\u8bbf\u95ee\u63a7\u5236\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5bc6\u94a5\u6dfb\u52a0\u5230\u53ea\u6709\u641c\u7d22\u6743\u9650\u7684\u5bc6\u94a5\u73af\u4e2d\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 KEYS\u5b50\u7cfb\u7edf\u5bc6\u94a5\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c4.14.6"
  },
  "referenceLink": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b",
  "serverity": "\u4e2d",
  "submitTime": "2017-12-22",
  "title": "Linux kernel KEYS\u5b50\u7cfb\u7edf\u5bc6\u94a5\u6f0f\u6d1e"
}

CVE-2017-17807 (GCVE-0-2017-17807)

Vulnerability from cvelistv5

Published

2017-12-20 23:00

Modified

2024-08-05 20:59

Severity ?

CWE

Summary

The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

References

▼	URL	Tags
	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/102301	vdb-entry, x_refsource_BID
	https://usn.ubuntu.com/3617-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3619-2/	vendor-advisory, x_refsource_UBUNTU
	https://www.debian.org/security/2018/dsa-4082	vendor-advisory, x_refsource_DEBIAN
	https://usn.ubuntu.com/3617-3/	vendor-advisory, x_refsource_UBUNTU
	https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/3632-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3620-2/	vendor-advisory, x_refsource_UBUNTU
	https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b	x_refsource_CONFIRM
	https://www.debian.org/security/2017/dsa-4073	vendor-advisory, x_refsource_DEBIAN
	https://usn.ubuntu.com/3617-2/	vendor-advisory, x_refsource_UBUNTU
	https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6	x_refsource_CONFIRM
	https://usn.ubuntu.com/3620-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/3619-1/	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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    "dateReserved": "2017-12-20T00:00:00",
    "dateUpdated": "2024-08-05T20:59:17.864Z",
    "state": "PUBLISHED"
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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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