NVD Vulnerability Detail

CVE-2016-6834

Summary	The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
Publication Date	Dec. 10, 2016, 9:59 a.m.
Registration Date	Jan. 26, 2021, 2:16 p.m.
Last Update	Nov. 21, 2024, 11:56 a.m.

Affected software configurations

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:8.0:::::::*

Related information, measures and tools

No	URL	タグ
1	http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05
2	http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05
3	http://www.openwall.com/lists/oss-security/2016/08/11/8	Mailing List Third Party Advisory
4	http://www.openwall.com/lists/oss-security/2016/08/11/8	Mailing List Third Party Advisory
5	http://www.openwall.com/lists/oss-security/2016/08/18/7	Mailing List Third Party Advisory
6	http://www.openwall.com/lists/oss-security/2016/08/18/7	Mailing List Third Party Advisory
7	http://www.securityfocus.com/bid/92446	Third Party Advisory VDB Entry
8	http://www.securityfocus.com/bid/92446	Third Party Advisory VDB Entry
9	https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html	Mailing List Third Party Advisory
10	https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html	Mailing List Third Party Advisory
11	https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.html	Patch Third Party Advisory
12	https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.html	Patch Third Party Advisory
13	https://security.gentoo.org/glsa/201609-01	Third Party Advisory
14	https://security.gentoo.org/glsa/201609-01	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-120	古典的バッファオーバーフロー	https://cwe.mitre.org/data/definitions/120.html

JVN Vulnerability Information

QEMU の hw/net/net_tx_pkt.c の net_tx_pkt_do_sw_fragmentation 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	QEMU の hw/net/net_tx_pkt.c の net_tx_pkt_do_sw_fragmentation 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	QEMU (別名 Quick Emulator) の hw/net/net_tx_pkt.c の net_tx_pkt_do_sw_fragmentation 関数には、サービス運用妨害 (無限ループおよび QEMU プロセスクラッシュ) 状態にされる脆弱性が存在します。
Possible impacts	ローカルのゲスト OS 管理者により、現在のフラグメント長の長さゼロを介して、サービス運用妨害 (無限ループおよび QEMU プロセスクラッシュ) 状態に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	Aug. 9, 2016, midnight
Registration Date	Dec. 13, 2016, 4 p.m.
Last Update	Dec. 13, 2016, 4 p.m.

Affected System

Fabrice Bellard

QEMU

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-2016-6834	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6834
National Vulnerability Database (NVD)
2	CVE-2016-6834	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-6834

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-399	https://jvndb.jvn.jp/ja/cwe/CWE-399.html

ベンダー情報

No	Name	URL
QEMU
1	net: check fragment length during fragmentation	http://git.qemu.org/?p=qemu.git;a=commit;h=ead315e43ea0c2ca3491209c6c8db8ce3f2bbe05
Qemu-devel
2	[PULL 1/3] net: check fragment length during fragmentation	https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01601.html

Change Log

No	Changed Details	Date of change
0	[2016年12月13日] 掲載	Feb. 17, 2018, 10:37 a.m.