NVD Vulnerability Detail

CVE-2011-2512

Summary	The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.
Publication Date	June 22, 2012, 12:55 a.m.
Registration Date	Jan. 28, 2021, 4:38 p.m.
Last Update	Nov. 21, 2024, 10:28 a.m.

CVSS2.0 : MEDIUM
Score	5.8
Vector	AV:A/AC:L/Au:N/C:P/I:P/A:P
攻撃元区分(AV)	隣接
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	低
完全性への影響(I)	低
可用性への影響(A)	低
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1	or higher	or less	more than	less than
cpe:2.3:a:kvm_group:qemu-kvm:0.12:::::::*
cpe:2.3:a:kvm_group:qemu-kvm::::::::		0.14.0

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377
2	http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
3	http://rhn.redhat.com/errata/RHSA-2011-0919.html
4	http://secunia.com/advisories/44458	Vendor Advisory
5	http://secunia.com/advisories/44648	Vendor Advisory
6	http://secunia.com/advisories/45158	Vendor Advisory
7	http://secunia.com/advisories/45170	Vendor Advisory
8	http://secunia.com/advisories/45301	Vendor Advisory
9	http://ubuntu.com/usn/usn-1165-1
10	http://www.openwall.com/lists/oss-security/2011/06/28/13	Patch
11	http://www.openwall.com/lists/oss-security/2011/06/29/15	Patch
12	http://www.osvdb.org/74751
13	https://hermes.opensuse.org/messages/9605323
14	https://www.debian.org/security/2011/dsa-2270
15	http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377
16	https://www.debian.org/security/2011/dsa-2270
17	https://hermes.opensuse.org/messages/9605323
18	http://www.osvdb.org/74751
19	http://www.openwall.com/lists/oss-security/2011/06/29/15	Patch
20	http://www.openwall.com/lists/oss-security/2011/06/28/13	Patch
21	http://ubuntu.com/usn/usn-1165-1
22	http://secunia.com/advisories/45301	Vendor Advisory
23	http://secunia.com/advisories/45170	Vendor Advisory
24	http://secunia.com/advisories/45158	Vendor Advisory
25	http://secunia.com/advisories/44648	Vendor Advisory
26	http://secunia.com/advisories/44458	Vendor Advisory
27	http://rhn.redhat.com/errata/RHSA-2011-0919.html
28	http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-20	不適切な入力確認	https://cwe.mitre.org/data/definitions/20.html

JVN Vulnerability Information

qemu-kvm の virtio_queue_notify におけるサービス運用妨害 (ゲストクラッシュ) の脆弱性

Title	qemu-kvm の virtio_queue_notify におけるサービス運用妨害 (ゲストクラッシュ) の脆弱性
Summary	qemu-kvm の virtio_queue_notify は、virtqueue の数を適切に検証しないため、サービス運用妨害 (ゲストクラッシュ) 状態となる、および任意のコードを実行される脆弱性が存在します。
Possible impacts	ゲストユーザにより、符号付き比較を回避する Virtio Header の Queue Notify フィールドの負数を介して、サービス運用妨害 (ゲストクラッシュ) 状態にされる、および任意のコードを実行される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	June 21, 2012, midnight
Registration Date	June 25, 2012, 4:36 p.m.
Last Update	June 25, 2012, 4:36 p.m.

Affected System

KVM Group

qemu-kvm 0.14.0 およびそれ以前

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2011-2512	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2512
National Vulnerability Database (NVD)
2	CVE-2011-2512	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-2512

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-20	https://jvndb.jvn.jp/ja/cwe/CWE-20.html

ベンダー情報

No	Name	URL
Debian Security Advisory
1	DSA-2270	http://www.debian.org/security/2011/dsa-2270
kernel.org
2	virt/kvm/qemu-kvm.git / commitdiff	http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=7157e2e23e89adcd436caeab31fdd6b47eded377
opensuse-security-announce
3	openSUSE-SU-2011:0803	http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
4	SUSE-SU-2011:0806	http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00008.html
Red Hat Security Advisory
5	RHSA-2011:0919	http://rhn.redhat.com/errata/RHSA-2011-0919.html
Ubuntu Security Notice
6	USN-1165-1	http://www.ubuntu.com/usn/usn-1165-1/

Change Log

No	Changed Details	Date of change
0	[2012年06月25日] 掲載	Feb. 17, 2018, 10:37 a.m.