NVD Vulnerability Detail

CVE-2017-6347

Summary	The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.
Publication Date	March 2, 2017, 5:59 a.m.
Registration Date	Jan. 26, 2021, 1:27 p.m.
Last Update	Nov. 21, 2024, 12:29 p.m.

Affected software configurations

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32	Patch Third Party Advisory
2	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32	Patch Third Party Advisory
3	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1	Patch Release Notes Third Party Advisory
4	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1	Patch Release Notes Third Party Advisory
5	http://www.openwall.com/lists/oss-security/2017/02/28/5	Mailing List Patch Third Party Advisory
6	http://www.openwall.com/lists/oss-security/2017/02/28/5	Mailing List Patch Third Party Advisory
7	http://www.securityfocus.com/bid/96487	Third Party Advisory VDB Entry
8	http://www.securityfocus.com/bid/96487	Third Party Advisory VDB Entry
9	https://bugzilla.redhat.com/show_bug.cgi?id=1427984	Issue Tracking Patch Third Party Advisory VDB Entry
10	https://bugzilla.redhat.com/show_bug.cgi?id=1427984	Issue Tracking Patch Third Party Advisory VDB Entry
11	https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32	Patch Third Party Advisory
12	https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32	Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-125	境界外読み取り	https://cwe.mitre.org/data/definitions/125.html

JVN Vulnerability Information

Linux Kernel の net/ipv4/ip_sockglue.c の ip_cmsg_recv_checksum 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	Linux Kernel の net/ipv4/ip_sockglue.c の ip_cmsg_recv_checksum 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	Linux Kernel の net/ipv4/ip_sockglue.c の ip_cmsg_recv_checksum 関数は、skb データレイアウトを適切に予想しないため、サービス運用妨害 (バッファオーバーリード) 状態にされるなど、不特定の影響を受ける脆弱性が存在します。
Possible impacts	ローカルユーザにより、巧妙に細工されたシステムコールを介して、サービス運用妨害 (バッファオーバーリード) 状態にされるなど、不特定の影響を受け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	Feb. 26, 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 4.10.1 未満

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-2017-6347	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6347
National Vulnerability Database (NVD)
2	CVE-2017-6347	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-6347

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-125	https://cwe.mitre.org/data/definitions/125.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-4.10.1	https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1
GitHub
2	ip: fix IP_CHECKSUM handling	https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
Linux Kernel
3	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
4	ip: fix IP_CHECKSUM handling	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
Red Hat Bugzilla
5	Bug 1427984	https://bugzilla.redhat.com/show_bug.cgi?id=1427984

Change Log

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