cnvd - cnvd-2015-02254

cnvd-2015-02254

Vulnerability from cnvd

Title: QEMU拒绝服务漏洞（CNVD-2015-02254）

Description:

QEMU是一款开放源码的模拟器软件。

QEMU存在拒绝服务漏洞，允许本地HVM用户通过禁用内存或I/O PCI Express的解码设备，访问设备触发不支持请求的响应导致拒绝服务。

Severity: 中

Patch Name: QEMU拒绝服务漏洞（CNVD-2015-02254）的补丁

Patch Description:

QEMU是一款开放源码的模拟器软件。

QEMU存在拒绝服务漏洞，允许本地HVM用户通过禁用内存或I/O PCI Express的解码设备，访问设备触发不支持请求的响应导致拒绝服务。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公告获取补丁以修复该漏洞： http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html

Reference: http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2756

Impacted products

Name
QEMU QEMU

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "72577"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-2756"
    }
  },
  "description": "QEMU\u662f\u4e00\u6b3e\u5f00\u653e\u6e90\u7801\u7684\u6a21\u62df\u5668\u8f6f\u4ef6\u3002\r\n\r\nQEMU\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u672c\u5730HVM\u7528\u6237\u901a\u8fc7\u7981\u7528\u5185\u5b58\u6216I/O PCI Express\u7684\u89e3\u7801\u8bbe\u5907\uff0c\u8bbf\u95ee\u8bbe\u5907\u89e6\u53d1\u4e0d\u652f\u6301\u8bf7\u6c42\u7684\u54cd\u5e94\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Jan Beulich",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u53d6\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-02254",
  "openTime": "2015-04-09",
  "patchDescription": "QEMU\u662f\u4e00\u6b3e\u5f00\u653e\u6e90\u7801\u7684\u6a21\u62df\u5668\u8f6f\u4ef6\u3002 \r\n\r\nQEMU\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u672c\u5730HVM\u7528\u6237\u901a\u8fc7\u7981\u7528\u5185\u5b58\u6216I/O PCI Express\u7684\u89e3\u7801\u8bbe\u5907\uff0c\u8bbf\u95ee\u8bbe\u5907\u89e6\u53d1\u4e0d\u652f\u6301\u8bf7\u6c42\u7684\u54cd\u5e94\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "QEMU\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2015-02254\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "QEMU QEMU"
  },
  "referenceLink": "http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html\r\nhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2756",
  "serverity": "\u4e2d",
  "submitTime": "2015-04-02",
  "title": "QEMU\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2015-02254\uff09"
}

CVE-2015-2756 (GCVE-0-2015-2756)

Vulnerability from cvelistv5

Published

2015-04-01 14:00

Modified

2024-08-06 05:24

Severity ?

CWE

Summary

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

References

▼	URL	Tags
	http://www.securityfocus.com/bid/72577	vdb-entry, x_refsource_BID
	https://security.gentoo.org/glsa/201504-04	vendor-advisory, x_refsource_GENTOO
	https://support.citrix.com/article/CTX206006	x_refsource_CONFIRM
	http://www.debian.org/security/2015/dsa-3259	vendor-advisory, x_refsource_DEBIAN
	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html	vendor-advisory, x_refsource_FEDORA
	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html	vendor-advisory, x_refsource_FEDORA
	http://support.citrix.com/article/CTX201145	x_refsource_CONFIRM
	http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html	mailing-list, x_refsource_MLIST
	http://xenbits.xen.org/xsa/advisory-126.html	x_refsource_CONFIRM
	http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html	vendor-advisory, x_refsource_SUSE
	http://www.ubuntu.com/usn/USN-2608-1	vendor-advisory, x_refsource_UBUNTU
	http://www.securitytracker.com/id/1031998	vdb-entry, x_refsource_SECTRACK
	http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html	vendor-advisory, x_refsource_FEDORA

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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