cnvd - cnvd-2017-33322

cnvd-2017-33322

Vulnerability from cnvd

Title: Linux kernel信息泄露漏洞（CNVD-2017-33322）

Description:

Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。

Linux kernel中的kernel/exit.c的waitid实现在非预期情况下访问Rusage数据结构，使本地用户可通过特制系统调用获取敏感信息，并绕过KASLR保护机制。

Severity: 低

Patch Name: Linux kernel信息泄露漏洞（CNVD-2017-33322）的补丁

Patch Description:

Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。

Linux kernel中的kernel/exit.c的waitid实现在非预期情况下访问Rusage数据结构，使本地用户可通过特制系统调用获取敏感信息，并绕过KASLR保护机制。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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9

Reference: https://nvd.nist.gov/vuln/detail/CVE-2017-14954

Impacted products

Name
Linux Kernel <4.13.4

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-14954"
    }
  },
  "description": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\nLinux kernel\u4e2d\u7684kernel/exit.c\u7684waitid\u5b9e\u73b0\u5728\u975e\u9884\u671f\u60c5\u51b5\u4e0b\u8bbf\u95eeRusage\u6570\u636e\u7ed3\u6784\uff0c\u4f7f\u672c\u5730\u7528\u6237\u53ef\u901a\u8fc7\u7279\u5236\u7cfb\u7edf\u8c03\u7528\u83b7\u53d6\u654f\u611f\u4fe1\u606f\uff0c\u5e76\u7ed5\u8fc7KASLR\u4fdd\u62a4\u673a\u5236\u3002",
  "discovererName": "Linux",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-33322",
  "openTime": "2017-11-09",
  "patchDescription": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\nLinux kernel\u4e2d\u7684kernel/exit.c\u7684waitid\u5b9e\u73b0\u5728\u975e\u9884\u671f\u60c5\u51b5\u4e0b\u8bbf\u95eeRusage\u6570\u636e\u7ed3\u6784\uff0c\u4f7f\u672c\u5730\u7528\u6237\u53ef\u901a\u8fc7\u7279\u5236\u7cfb\u7edf\u8c03\u7528\u83b7\u53d6\u654f\u611f\u4fe1\u606f\uff0c\u5e76\u7ed5\u8fc7KASLR\u4fdd\u62a4\u673a\u5236\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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-33322\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c4.13.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-14954",
  "serverity": "\u4f4e",
  "submitTime": "2017-10-09",
  "title": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-33322\uff09"
}

CVE-2017-14954 (GCVE-0-2017-14954)

Vulnerability from cvelistv5

Published

2017-10-01 03:00

Modified

2024-09-17 00:50

Severity ?

CWE

Summary

The waitid implementation in kernel/exit.c in the Linux kernel through 4.13.4 accesses rusage data structures in unintended cases, which allows local users to obtain sensitive information, and bypass the KASLR protection mechanism, via a crafted system call.

References

▼	URL	Tags
	https://github.com/torvalds/linux/commit/6c85501f2fabcfc4fc6ed976543d252c4eaf4be9	x_refsource_MISC
	https://grsecurity.net/~spender/exploits/wait_for_kaslr_to_be_effective.c	x_refsource_MISC
	https://twitter.com/grsecurity/status/914079864478666753	x_refsource_MISC
	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9	x_refsource_MISC
	https://twitter.com/_argp/status/914021130712870912	x_refsource_MISC

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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