cnvd - cnvd-2016-09457

cnvd-2016-09457

Vulnerability from cnvd

Title: Linux kernel本地拒绝服务漏洞（CNVD-2016-09457）

Description:

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。

Linux kernel 4.8.2及之前版本中的security/keys/proc.c文件中的‘proc_keys_show’函数存在拒绝服务漏洞，该漏洞源于程序对超时数据使用错误的缓冲区大小。本地攻击者可通过读取/proc/keys文件利用该漏洞造成拒绝服务（栈内存破坏和错误）。

Severity: 中

Patch Name: Linux kernel本地拒绝服务漏洞（CNVD-2016-09457）的补丁

Patch Description:

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。

Linux kernel 4.8.2及之前版本中的security/keys/proc.c文件中的‘proc_keys_show’函数存在拒绝服务漏洞，该漏洞源于程序对超时数据使用错误的缓冲区大小。本地攻击者可通过读取/proc/keys文件利用该漏洞造成拒绝服务（栈内存破坏和错误）。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:

用户可参考如下厂商提供的安全补丁以修复该漏洞： http://source.android.com

Reference: http://www.securityfocus.com/bid/93544/solution http://www.securityfocus.com/bid/93544

Impacted products

Name
Linux kernel <=4.8.2

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "93544"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-7042"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.8.2\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684security/keys/proc.c\u6587\u4ef6\u4e2d\u7684\u2018proc_keys_show\u2019\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bf9\u8d85\u65f6\u6570\u636e\u4f7f\u7528\u9519\u8bef\u7684\u7f13\u51b2\u533a\u5927\u5c0f\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u8bfb\u53d6/proc/keys\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u6808\u5185\u5b58\u7834\u574f\u548c\u9519\u8bef\uff09\u3002",
  "discovererName": "Ondrej Kozina of Red Hat.",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://source.android.com",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-09457",
  "openTime": "2016-10-19",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.8.2\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684security/keys/proc.c\u6587\u4ef6\u4e2d\u7684\u2018proc_keys_show\u2019\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bf9\u8d85\u65f6\u6570\u636e\u4f7f\u7528\u9519\u8bef\u7684\u7f13\u51b2\u533a\u5927\u5c0f\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u8bfb\u53d6/proc/keys\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u6808\u5185\u5b58\u7834\u574f\u548c\u9519\u8bef\uff09\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-09457\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c=4.8.2"
  },
  "referenceLink": "http://www.securityfocus.com/bid/93544/solution\r\nhttp://www.securityfocus.com/bid/93544",
  "serverity": "\u4e2d",
  "submitTime": "2016-10-14",
  "title": "Linux kernel\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-09457\uff09"
}

CVE-2016-7042 (GCVE-0-2016-7042)

Vulnerability from cvelistv5

Published

2016-10-16 21:00

Modified

2024-08-06 01:50

Severity ?

CWE

Summary

The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.

References

▼	URL	Tags
	https://source.android.com/security/bulletin/2017-01-01.html	x_refsource_CONFIRM
	https://bugzilla.redhat.com/show_bug.cgi?id=1373966	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2016/10/13/5	mailing-list, x_refsource_MLIST
	https://access.redhat.com/errata/RHSA-2017:2669	vendor-advisory, x_refsource_REDHAT
	http://rhn.redhat.com/errata/RHSA-2017-0817.html	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2017:2077	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2017:1842	vendor-advisory, x_refsource_REDHAT
	http://www.securityfocus.com/bid/93544	vdb-entry, x_refsource_BID

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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