NVD Vulnerability Detail

CVE-2015-7560

Summary	The SMB1 implementation in smbd in Samba 3.x and 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4 allows remote authenticated users to modify arbitrary ACLs by using a UNIX SMB1 call to create a symlink, and then using a non-UNIX SMB1 call to write to the ACL content.
Publication Date	March 14, 2016, 7:59 a.m.
Registration Date	Jan. 26, 2021, 2:56 p.m.
Last Update	Nov. 21, 2024, 11:36 a.m.

CVSS3.1 : MEDIUM
スコア	6.5
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
攻撃元区分(AV)	ネットワーク
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)	高
可用性への影響(A)	なし

CVSS2.0 : MEDIUM
Score	4.0
Vector	AV:N/AC:L/Au:S/C:N/I:P/A:N
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)	単一
機密性への影響(C)	なし
完全性への影響(I)	低
可用性への影響(A)	なし
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:samba:samba:4.4.0:rc3::::::
cpe:2.3:a:samba:samba:4.4.0:rc1::::::
cpe:2.3:a:samba:samba:4.4.0:rc2::::::
cpe:2.3:a:samba:samba::::::::	3.2.0			4.1.23
cpe:2.3:a:samba:samba::::::::	4.2.0			4.2.9
cpe:2.3:a:samba:samba::::::::	4.3.0			4.3.6

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:15.10:::::::*
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:12.04::::-:::

Configuration3	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://lists.fedoraproject.org/pipermail/package-announce/2016-March/178730.html	Mailing List Third Party Advisory
2	http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178730.html	Mailing List Third Party Advisory
3	http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178764.html	Mailing List Third Party Advisory
4	http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178764.html	Mailing List Third Party Advisory
5	http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180000.html	Mailing List Third Party Advisory
6	http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180000.html	Mailing List Third Party Advisory
7	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html	Mailing List Third Party Advisory
8	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html	Mailing List Third Party Advisory
9	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00064.html	Mailing List Third Party Advisory
10	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00064.html	Mailing List Third Party Advisory
11	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00065.html	Mailing List Third Party Advisory
12	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00065.html	Mailing List Third Party Advisory
13	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00081.html	Mailing List Third Party Advisory
14	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00081.html	Mailing List Third Party Advisory
15	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00090.html	Mailing List Third Party Advisory
16	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00090.html	Mailing List Third Party Advisory
17	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00092.html	Mailing List Third Party Advisory
18	http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00092.html	Mailing List Third Party Advisory
19	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html	Mailing List Third Party Advisory
20	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html	Mailing List Third Party Advisory
21	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html	Mailing List Third Party Advisory
22	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html	Mailing List Third Party Advisory
23	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html	Mailing List Third Party Advisory
24	http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html	Mailing List Third Party Advisory
25	http://www.debian.org/security/2016/dsa-3514	Third Party Advisory
26	http://www.debian.org/security/2016/dsa-3514	Third Party Advisory
27	http://www.securityfocus.com/bid/84267	Third Party Advisory VDB Entry
28	http://www.securityfocus.com/bid/84267	Third Party Advisory VDB Entry
29	http://www.securitytracker.com/id/1035220	Third Party Advisory VDB Entry
30	http://www.securitytracker.com/id/1035220	Third Party Advisory VDB Entry
31	http://www.ubuntu.com/usn/USN-2922-1	Third Party Advisory
32	http://www.ubuntu.com/usn/USN-2922-1	Third Party Advisory
33	https://bugzilla.samba.org/show_bug.cgi?id=11648	Issue Tracking Vendor Advisory
34	https://bugzilla.samba.org/show_bug.cgi?id=11648	Issue Tracking Vendor Advisory
35	https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842	Third Party Advisory
36	https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842	Third Party Advisory
37	https://www.samba.org/samba/security/CVE-2015-7560.html	Vendor Advisory
38	https://www.samba.org/samba/security/CVE-2015-7560.html	Vendor Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-284	不適切なアクセス制御	https://cwe.mitre.org/data/definitions/284.html

JVN Vulnerability Information

Samba の smbd の SMB1 の実装における任意の ACL を変更される脆弱性

Title	Samba の smbd の SMB1 の実装における任意の ACL を変更される脆弱性
Summary	Samba の smbd の SMB1 の実装には、任意の ACL を変更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-284: Improper Access Control (不適切なアクセス制御) と識別されています。 http://cwe.mitre.org/data/definitions/284.html
Possible impacts	リモート認証されたユーザにより、UNIX SMB1 コールの利用でシンボリックリンクを作成され、その後、UNIX でない SMB1 コールの利用で ACL コンテンツに書き込まれることで、任意の ACL を変更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	Sept. 29, 2015, midnight
Registration Date	March 23, 2016, 5:44 p.m.
Last Update	March 23, 2016, 5:44 p.m.

Affected System

Samba Project

Samba 3.x

Samba 4.1.23 未満の 4.x

Samba 4.2.9 未満の 4.2.x

Samba 4.3.6 未満の 4.3.x

Samba 4.4.0rc4 未満の 4.4.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-2015-7560	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7560
National Vulnerability Database (NVD)
2	CVE-2015-7560	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-7560

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
Samba Security Announcement
1	Incorrect ACL get/set allowed on symlink path.	https://www.samba.org/samba/security/CVE-2015-7560.html

Change Log

No	Changed Details	Date of change
0	[2016年03月23日] 掲載	Feb. 17, 2018, 10:37 a.m.