NVD Vulnerability Detail

CVE-2014-4943

Summary	The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.
Publication Date	July 20, 2014, 4:55 a.m.
Registration Date	Jan. 26, 2021, 3:13 p.m.
Last Update	Nov. 21, 2024, 11:11 a.m.

CVSS2.0 : MEDIUM
Score	6.9
Vector	AV:L/AC:M/Au:N/C:C/I:C/A:C
攻撃元区分(AV)	ローカル
攻撃条件の複雑さ(AC)	中
攻撃前の認証要否(Au)	不要
機密性への影響(C)	高
完全性への影響(I)	高
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::::::::	3.11			3.12.27
cpe:2.3:o:linux:linux_kernel::::::::	3.15			3.15.9
cpe:2.3:o:linux:linux_kernel::::::::	3.13			3.14.16
cpe:2.3:o:linux:linux_kernel::::::::	3.5			3.10.52
cpe:2.3:o:linux:linux_kernel::::::::	3.3			3.4.102
cpe:2.3:o:linux:linux_kernel::::::::	2.6.23			3.2.62

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3::::::
cpe:2.3:o:suse:linux_enterprise_server:11:sp3::::vmware::*
cpe:2.3:o:suse:linux_enterprise_server:11:sp3::::::
cpe:2.3:o:opensuse:opensuse:11.4:::::::*
cpe:2.3:o:suse:linux_enterprise_server:11:sp2:::ltss:::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:o:redhat:enterprise_linux_server_aus:6.2:::::::*

Configuration4		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:7.0:::::::*

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	Broken Link Third Party Advisory
2	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	Broken Link Third Party Advisory
3	http://linux.oracle.com/errata/ELSA-2014-0924.html	Third Party Advisory
4	http://linux.oracle.com/errata/ELSA-2014-0924.html	Third Party Advisory
5	http://linux.oracle.com/errata/ELSA-2014-3047.html	Third Party Advisory
6	http://linux.oracle.com/errata/ELSA-2014-3047.html	Third Party Advisory
7	http://linux.oracle.com/errata/ELSA-2014-3048.html	Third Party Advisory
8	http://linux.oracle.com/errata/ELSA-2014-3048.html	Third Party Advisory
9	http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html	Mailing List Third Party Advisory
10	http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html	Mailing List Third Party Advisory
11	http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html	Mailing List Third Party Advisory
12	http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html	Mailing List Third Party Advisory
13	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html	Mailing List Third Party Advisory
14	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html	Mailing List Third Party Advisory
15	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html	Mailing List Third Party Advisory
16	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html	Mailing List Third Party Advisory
17	http://openwall.com/lists/oss-security/2014/07/17/1	Mailing List Third Party Advisory
18	http://openwall.com/lists/oss-security/2014/07/17/1	Mailing List Third Party Advisory
19	http://osvdb.org/show/osvdb/109277	Broken Link
20	http://osvdb.org/show/osvdb/109277	Broken Link
21	http://rhn.redhat.com/errata/RHSA-2014-1025.html	Third Party Advisory
22	http://rhn.redhat.com/errata/RHSA-2014-1025.html	Third Party Advisory
23	http://secunia.com/advisories/59790	Third Party Advisory
24	http://secunia.com/advisories/59790	Third Party Advisory
25	http://secunia.com/advisories/60011	Third Party Advisory
26	http://secunia.com/advisories/60011	Third Party Advisory
27	http://secunia.com/advisories/60071	Third Party Advisory
28	http://secunia.com/advisories/60071	Third Party Advisory
29	http://secunia.com/advisories/60220	Third Party Advisory
30	http://secunia.com/advisories/60220	Third Party Advisory
31	http://secunia.com/advisories/60380	Third Party Advisory
32	http://secunia.com/advisories/60380	Third Party Advisory
33	http://secunia.com/advisories/60393	Third Party Advisory
34	http://secunia.com/advisories/60393	Third Party Advisory
35	http://www.debian.org/security/2014/dsa-2992	Third Party Advisory
36	http://www.debian.org/security/2014/dsa-2992	Third Party Advisory
37	http://www.exploit-db.com/exploits/36267	Third Party Advisory VDB Entry
38	http://www.exploit-db.com/exploits/36267	Third Party Advisory VDB Entry
39	http://www.securitytracker.com/id/1030610	Third Party Advisory VDB Entry
40	http://www.securitytracker.com/id/1030610	Third Party Advisory VDB Entry
41	https://bugzilla.redhat.com/show_bug.cgi?id=1119458	Issue Tracking Third Party Advisory
42	https://bugzilla.redhat.com/show_bug.cgi?id=1119458	Issue Tracking Third Party Advisory
43	https://exchange.xforce.ibmcloud.com/vulnerabilities/94665	Third Party Advisory VDB Entry
44	https://exchange.xforce.ibmcloud.com/vulnerabilities/94665	Third Party Advisory VDB Entry
45	https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	Patch Third Party Advisory
46	https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-269	不適切な権限管理	https://cwe.mitre.org/data/definitions/269.html

JVN Vulnerability Information

Linux Kernel の net/l2tp/l2tp_ppp.c 内の PPPoL2TP 関数における権限を取得される脆弱性

Title	Linux Kernel の net/l2tp/l2tp_ppp.c 内の PPPoL2TP 関数における権限を取得される脆弱性
Summary	Linux Kernel の net/l2tp/l2tp_ppp.c 内の PPPoL2TP 関数には、権限を取得される脆弱性が存在します。
Possible impacts	ローカルユーザにより、l2tp ソケットと inet ソケット間のデータ構造の違いを利用されることで、権限を取得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	July 15, 2014, midnight
Registration Date	July 22, 2014, 5:18 p.m.
Last Update	Nov. 27, 2014, 5:46 p.m.

Affected System

Linux

Linux Kernel 3.15.6 まで

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-2014-4943	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4943
National Vulnerability Database (NVD)
2	CVE-2014-4943	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-4943

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-264	https://jvndb.jvn.jp/ja/cwe/CWE-264.html

ベンダー情報

No	Name	URL
GitHub
1	net/l2tp: don't fall back on UDP [get\|set]sockopt	https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
Linux Kernel
2	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
3	net/l2tp: don't fall back on UDP [get\|set]sockopt	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
Oracle
4	ELSA-2014-0924	http://linux.oracle.com/errata/ELSA-2014-0924.html
5	ELSA-2014-3047	http://linux.oracle.com/errata/ELSA-2014-3047.html
6	ELSA-2014-3048	http://linux.oracle.com/errata/ELSA-2014-3048.html
Red Hat Bugzilla
7	Bug 1119458	https://bugzilla.redhat.com/show_bug.cgi?id=1119458
Red Hat Security Advisory
8	RHSA-2014:1025	https://rhn.redhat.com/errata/RHSA-2014-1025.html

Change Log

No	Changed Details	Date of change
0	[2014年07月22日] 掲載 [2014年07月28日] CVSS による深刻度：内容を更新 [2014年08月06日] ベンダ情報：オラクル (ELSA-2014-3047) を追加ベンダ情報：オラクル (ELSA-2014-3048) を追加ベンダ情報：オラクル (ELSA-2014-0924) を追加 [2014年11月27日] ベンダ情報：レッドハット (RHSA-2014:1025) を追加	Feb. 17, 2018, 10:37 a.m.