NVD Vulnerability Detail

CVE-2018-18690

Summary	In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
Publication Date	Oct. 27, 2018, 3:29 a.m.
Registration Date	March 1, 2021, 7:10 p.m.
Last Update	Nov. 21, 2024, 12:56 p.m.

CVSS3.0 : MEDIUM
スコア	5.5
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
攻撃元区分(AV)	ローカル
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	低
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
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)	高

CVSS2.0 : MEDIUM
Score	4.9
Vector	AV:L/AC:L/Au:N/C:N/I:N/A:C
攻撃元区分(AV)	ローカル
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)	高
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:o:linux:linux_kernel::::::::					4.17

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::

Configuration3		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.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473c	Patch Vendor Advisory
2	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473c	Patch Vendor Advisory
3	http://www.securityfocus.com/bid/105753	Third Party Advisory VDB Entry
4	http://www.securityfocus.com/bid/105753	Third Party Advisory VDB Entry
5	https://bugzilla.kernel.org/show_bug.cgi?id=199119	Exploit Issue Tracking Vendor Advisory
6	https://bugzilla.kernel.org/show_bug.cgi?id=199119	Exploit Issue Tracking Vendor Advisory
7	https://bugzilla.suse.com/show_bug.cgi?id=1105025	Issue Tracking Third Party Advisory
8	https://bugzilla.suse.com/show_bug.cgi?id=1105025	Issue Tracking Third Party Advisory
9	https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473c	Patch Third Party Advisory
10	https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473c	Patch Third Party Advisory
11	https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html	Mailing List Third Party Advisory
12	https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html	Mailing List Third Party Advisory
13	https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html	Mailing List Third Party Advisory
14	https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html	Mailing List Third Party Advisory
15	https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html	Mailing List Third Party Advisory
16	https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html	Mailing List Third Party Advisory
17	https://usn.ubuntu.com/3847-1/	Third Party Advisory
18	https://usn.ubuntu.com/3847-1/	Third Party Advisory
19	https://usn.ubuntu.com/3847-2/	Third Party Advisory
20	https://usn.ubuntu.com/3847-2/	Third Party Advisory
21	https://usn.ubuntu.com/3847-3/	Third Party Advisory
22	https://usn.ubuntu.com/3847-3/	Third Party Advisory
23	https://usn.ubuntu.com/3848-1/	Third Party Advisory
24	https://usn.ubuntu.com/3848-1/	Third Party Advisory
25	https://usn.ubuntu.com/3848-2/	Third Party Advisory
26	https://usn.ubuntu.com/3848-2/	Third Party Advisory
27	https://usn.ubuntu.com/3849-1/	Third Party Advisory
28	https://usn.ubuntu.com/3849-1/	Third Party Advisory
29	https://usn.ubuntu.com/3849-2/	Third Party Advisory
30	https://usn.ubuntu.com/3849-2/	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-754	例外的な状態における不適切なチェック	https://cwe.mitre.org/data/definitions/754.html

JVN Vulnerability Information

Linux Kernel におけるデータ処理に関する脆弱性

Title	Linux Kernel におけるデータ処理に関する脆弱性
Summary	Linux Kernel には、データ処理に関する脆弱性が存在します。
Possible impacts	サービス運用妨害 (DoS) 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	April 17, 2018, midnight
Registration Date	Jan. 17, 2019, 5:54 p.m.
Last Update	Jan. 17, 2019, 5:54 p.m.

Affected System

Linux

Linux Kernel 4.17 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-2018-18690	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18690
National Vulnerability Database (NVD)
2	CVE-2018-18690	https://nvd.nist.gov/vuln/detail/CVE-2018-18690

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-19	https://cwe.mitre.org/data/definitions/19.html

ベンダー情報

No	Name	URL
GitHub
1	xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE	https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473c
Kernel.org Bugzilla
2	Bug 199119	https://bugzilla.kernel.org/show_bug.cgi?id=199119
Linux Kernel
3	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
4	xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473c

Change Log

No	Changed Details	Date of change
1	[2019年01月17日] 掲載	Jan. 17, 2019, 5:54 p.m.