NVD Vulnerability Detail

CVE-2015-6496

Summary	conntrackd in conntrack-tools 1.4.2 and earlier does not ensure that the optional kernel modules are loaded before using them, which allows remote attackers to cause a denial of service (crash) via a (1) DCCP, (2) SCTP, or (3) ICMPv6 packet.
Publication Date	Aug. 24, 2015, 11:59 p.m.
Registration Date	Jan. 26, 2021, 2:54 p.m.
Last Update	Nov. 21, 2024, 11:35 a.m.

CVSS2.0 : MEDIUM
Score	5.0
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
攻撃元区分(AV)	ネットワーク
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)	なし
完全性への影響(I)	なし
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:netfilter:conntrack-tools::::::::			1.4.2

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:debian:debian_linux:7.0:::::::*

Related information, measures and tools

No	URL	タグ
1	http://bugzilla.netfilter.org/show_bug.cgi?id=910	Exploit Issue Tracking Third Party Advisory
2	http://bugzilla.netfilter.org/show_bug.cgi?id=910	Exploit Issue Tracking Third Party Advisory
3	http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html	Third Party Advisory
4	http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html	Third Party Advisory
5	http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html	Third Party Advisory
6	http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html	Third Party Advisory
7	http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html	Mailing List Third Party Advisory
8	http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html	Mailing List Third Party Advisory
9	http://www.debian.org/security/2015/dsa-3341	Third Party Advisory
10	http://www.debian.org/security/2015/dsa-3341	Third Party Advisory
11	http://www.openwall.com/lists/oss-security/2015/08/14/4	Mailing List Third Party Advisory
12	http://www.openwall.com/lists/oss-security/2015/08/14/4	Mailing List Third Party Advisory
13	http://www.openwall.com/lists/oss-security/2015/08/18/1	Mailing List Third Party Advisory
14	http://www.openwall.com/lists/oss-security/2015/08/18/1	Mailing List Third Party Advisory
15	https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd	Patch Vendor Advisory URL Repurposed
16	https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd	Patch Vendor Advisory URL Repurposed

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-17	コード	https://cwe.mitre.org/data/definitions/17.html

JVN Vulnerability Information

conntrack-tools の conntrackd におけるサービス運用妨害 (DoS) の脆弱性

Title	conntrack-tools の conntrackd におけるサービス運用妨害 (DoS) の脆弱性
Summary	conntrack-tools の conntrackd は、オプションのカーネルモジュールの使用前に、それがロードされていることを確認しないため、サービス運用妨害 (クラッシュ) 状態にされる脆弱性が存在します。補足情報 : CWE による脆弱性タイプは、CWE-17: Code (コード) と識別されています。 http://cwe.mitre.org/data/definitions/17.html
Possible impacts	第三者により、(1) DCCP、(2) SCTP、または (3) ICMPv6 パケットを介して、サービス運用妨害 (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. 14, 2015, midnight
Registration Date	Aug. 28, 2015, 12:25 p.m.
Last Update	Aug. 28, 2015, 12:25 p.m.

Affected System

Pablo Neira Ayuso

conntrack-tools 1.4.2 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-2015-6496	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6496
National Vulnerability Database (NVD)
2	CVE-2015-6496	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-6496

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-Other	https://www.ipa.go.jp/security/vuln/CWE.html#CWEOther

ベンダー情報

No	Name	URL
Pablo Neira Ayuso
1	Bug 910 - Segmentation Fault	http://bugzilla.netfilter.org/show_bug.cgi?id=910
2	conntrackd: build: fix crash when optional kernel modules are not loaded	https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd
3	The conntrack-tools user manual	http://conntrack-tools.netfilter.org/manual.html

その他

No	Name	URL
関連文書
1	CVE request: conntrackd denial of service with unusual network traffic	http://www.openwall.com/lists/oss-security/2015/08/14/4
2	Re: CVE request: conntrackd denial of service with unusual network traffic	http://www.openwall.com/lists/oss-security/2015/08/18/1

Change Log

No	Changed Details	Date of change
0	[2015年08月28日] 掲載	Feb. 17, 2018, 10:37 a.m.