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JVN脆弱性詳細

Linux Kernel の TCP スタックにおけるサービス運用妨害 (DoS) の脆弱性

Title	Linux Kernel の TCP スタックにおけるサービス運用妨害 (DoS) の脆弱性
Summary	Linux Kernel の TCP スタックは、高速ネットワーク接続時の SYN Cookie 保護メカニズムを適切に実装していないため、サービス運用妨害 (CPU 資源の消費) 状態にされる脆弱性が存在します。
Possible impacts	リモートの攻撃者により、大量の TCP SYN パケットを送信されることで、サービス運用妨害 (CPU 資源の消費) 状態にされる可能性があります。
Solution	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	Feb. 12, 2017, midnight
Registration Date	March 16, 2017, 6:21 p.m.
Last Update	March 16, 2017, 6:21 p.m.

Affected System

Linux

Linux Kernel 3.x

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-2017-5972	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5972
National Vulnerability Database (NVD)
2	CVE-2017-5972	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-5972

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
Linux Kernel
1	Linux Kernel Archives	http://www.kernel.org

その他

No	Name	URL
関連文書
1	CentOS7 kernel crashing by rsyslog daemon vulnerability DoS	https://cxsecurity.com/issue/WLB-2017020112

Change Log

No	Changed Details	Date of change
0	[2017年03月16日] 掲載	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2017-5972

Summary	The TCP stack in the Linux kernel 3.x does not properly implement a SYN cookie protection mechanism for the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many TCP SYN packets, as demonstrated by an attack against the kernel-3.10.0 package in CentOS Linux 7. NOTE: third parties have been unable to discern any relationship between the GitHub Engineering finding and the Trigemini.c attack code.
Publication Date	Feb. 14, 2017, 3:59 p.m.
Registration Date	Jan. 26, 2021, 1:26 p.m.
Last Update	Nov. 21, 2024, 12:28 p.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::		3.0.0	3.19.8

Related information, measures and tools

No	URL	タグ
1	http://seclists.org/oss-sec/2017/q1/573	Mailing List Third Party Advisory
2	http://seclists.org/oss-sec/2017/q1/573	Mailing List Third Party Advisory
3	http://www.securityfocus.com/bid/96231	Third Party Advisory VDB Entry
4	http://www.securityfocus.com/bid/96231	Third Party Advisory VDB Entry
5	https://access.redhat.com/security/cve/cve-2017-5972	Third Party Advisory
6	https://access.redhat.com/security/cve/cve-2017-5972	Third Party Advisory
7	https://bugzilla.redhat.com/show_bug.cgi?id=1422081	Issue Tracking Third Party Advisory
8	https://bugzilla.redhat.com/show_bug.cgi?id=1422081	Issue Tracking Third Party Advisory
9	https://cxsecurity.com/issue/WLB-2017020112	Exploit Third Party Advisory
10	https://cxsecurity.com/issue/WLB-2017020112	Exploit Third Party Advisory
11	https://githubengineering.com/syn-flood-mitigation-with-synsanity/	Third Party Advisory
12	https://githubengineering.com/syn-flood-mitigation-with-synsanity/	Third Party Advisory
13	https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html	Exploit Third Party Advisory VDB Entry
14	https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html	Exploit Third Party Advisory VDB Entry
15	https://security-tracker.debian.org/tracker/CVE-2017-5972	Third Party Advisory
16	https://security-tracker.debian.org/tracker/CVE-2017-5972	Third Party Advisory
17	https://www.exploit-db.com/exploits/41350/	Third Party Advisory VDB Entry
18	https://www.exploit-db.com/exploits/41350/	Third Party Advisory VDB Entry

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-400	リソースの枯渇	https://cwe.mitre.org/data/definitions/400.html