cnvd - cnvd-2016-01768

cnvd-2016-01768

Vulnerability from cnvd

Title: FreeBSD Kernel amd64_set_ldt堆溢出漏洞

Description:

FreeBSD是一种UNIX操作系统。

FreeBSD 10.2-RELENG之前版本内核代码中，amd64_set_ldt()函数存在整数签名错误，可导致内核堆溢出，本地攻击者可造成系统崩溃。

Severity: 中

Patch Name: FreeBSD Kernel amd64_set_ldt堆溢出漏洞的补丁

Patch Description:

FreeBSD是一种UNIX操作系统。

FreeBSD 10.2-RELENG之前版本内核代码中，amd64_set_ldt()函数存在整数签名错误，可导致内核堆溢出，本地攻击者可造成系统崩溃。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:

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://www.freebsd.org/cgi/man.cgi?query=i386_set_ldt&sektion=2&manpath=FreeBSD+8.2-RELEASE https://svnweb.freebsd.org/base/release/10.2.0/sys/amd64/amd64/sys_machdep.c?view=markup https://svnweb.freebsd.org/base/release/10.2.0/sys/x86/include/sysarch.h?view=markup

Reference: https://www.freebsd.org/security/advisories/FreeBSD-SA-16:15.sysarch.asc

Impacted products

Name
FreeBSD FreeBSD < 10.2-RELENG

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-1885"
    }
  },
  "description": "FreeBSD\u662f\u4e00\u79cdUNIX\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFreeBSD 10.2-RELENG\u4e4b\u524d\u7248\u672c\u5185\u6838\u4ee3\u7801\u4e2d\uff0camd64_set_ldt()\u51fd\u6570\u5b58\u5728\u6574\u6570\u7b7e\u540d\u9519\u8bef\uff0c\u53ef\u5bfc\u81f4\u5185\u6838\u5806\u6ea2\u51fa\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u9020\u6210\u7cfb\u7edf\u5d29\u6e83\u3002",
  "discovererName": "Francisco Falcon",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://www.freebsd.org/cgi/man.cgi?query=i386_set_ldt\u0026sektion=2\u0026manpath=FreeBSD+8.2-RELEASE\r\nhttps://svnweb.freebsd.org/base/release/10.2.0/sys/amd64/amd64/sys_machdep.c?view=markup\r\nhttps://svnweb.freebsd.org/base/release/10.2.0/sys/x86/include/sysarch.h?view=markup",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-01768",
  "openTime": "2016-03-22",
  "patchDescription": "FreeBSD\u662f\u4e00\u79cdUNIX\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFreeBSD 10.2-RELENG\u4e4b\u524d\u7248\u672c\u5185\u6838\u4ee3\u7801\u4e2d\uff0camd64_set_ldt()\u51fd\u6570\u5b58\u5728\u6574\u6570\u7b7e\u540d\u9519\u8bef\uff0c\u53ef\u5bfc\u81f4\u5185\u6838\u5806\u6ea2\u51fa\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u9020\u6210\u7cfb\u7edf\u5d29\u6e83\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": "FreeBSD Kernel amd64_set_ldt\u5806\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "FreeBSD FreeBSD \u003c 10.2-RELENG"
  },
  "referenceLink": "https://www.freebsd.org/security/advisories/FreeBSD-SA-16:15.sysarch.asc",
  "serverity": "\u4e2d",
  "submitTime": "2016-03-17",
  "title": "FreeBSD Kernel amd64_set_ldt\u5806\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2016-1885 (GCVE-0-2016-1885)

Vulnerability from cvelistv5

Published

2016-04-08 16:00

Modified

2024-08-05 23:10

Severity ?

CWE

Summary

Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39, 10.1 before p31, and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call, which triggers a heap-based buffer overflow.

References

▼	URL	Tags
	https://www.exploit-db.com/exploits/39570/	exploit, x_refsource_EXPLOIT-DB
	https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc	vendor-advisory, x_refsource_FREEBSD
	http://www.coresecurity.com/advisories/freebsd-kernel-amd64setldt-heap-overflow	x_refsource_MISC
	http://seclists.org/fulldisclosure/2016/Mar/56	mailing-list, x_refsource_FULLDISC
	http://seclists.org/fulldisclosure/2016/Mar/67	mailing-list, x_refsource_FULLDISC
	http://www.securitytracker.com/id/1035309	vdb-entry, x_refsource_SECTRACK
	http://www.securityfocus.com/archive/1/537813/100/0/threaded	mailing-list, x_refsource_BUGTRAQ
	http://www.securityfocus.com/archive/1/537812/100/0/threaded	mailing-list, x_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/136276/FreeBSD-Kernel-amd64_set_ldt-Heap-Overflow.html	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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