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JVN脆弱性詳細

Linux Kernel の net/sctp/socket.c における権限を取得される脆弱性

Title	Linux Kernel の net/sctp/socket.c における権限を取得される脆弱性
Summary	Linux Kernel の net/sctp/socket.c 内の sctp_getsockopt_assoc_stats 関数は、copy_from_user 操作を実行する前に、サイズ値を検証しないため、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、SCTP_GET_ASSOC_STATS getsockopt システムコールを含む巧妙に細工されたアプリケーションを介して、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	March 20, 2013, midnight
Registration Date	March 26, 2013, 3:04 p.m.
Last Update	March 26, 2013, 3:04 p.m.

Affected System

Linux

Linux Kernel 3.8.4 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-2013-1828	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1828
National Vulnerability Database (NVD)
2	CVE-2013-1828	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-1828

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-20	https://jvndb.jvn.jp/ja/cwe/CWE-20.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-3.8.4	http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4
GitHub
2	net/sctp: Validate parameter size for SCTP_GET_ASSOC_STATS	https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1
Linux Kernel
3	Linux Kernel Archives	http://www.kernel.org
4	linux/kernel/git/torvalds/linux.git	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=726bc6b092da4c093eb74d13c07184b18c1af0f1
Red Hat Bugzilla
5	Bug 919315	https://bugzilla.redhat.com/show_bug.cgi?id=919315

Change Log

No	Changed Details	Date of change
0	[2013年03月26日] 掲載	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2013-1828

Summary	The sctp_getsockopt_assoc_stats function in net/sctp/socket.c in the Linux kernel before 3.8.4 does not validate a size value before proceeding to a copy_from_user operation, which allows local users to gain privileges via a crafted application that contains an SCTP_GET_ASSOC_STATS getsockopt system call.
Publication Date	March 22, 2013, 8:59 p.m.
Registration Date	Jan. 26, 2021, 3:37 p.m.
Last Update	Nov. 21, 2024, 10:50 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::		3.8			3.8.4

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=726bc6b092da4c093eb74d13c07184b18c1af0f1	Vendor Advisory
2	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=726bc6b092da4c093eb74d13c07184b18c1af0f1	Vendor Advisory
3	http://grsecurity.net/~spender/sctp.c	Exploit Third Party Advisory
4	http://grsecurity.net/~spender/sctp.c	Exploit Third Party Advisory
5	http://twitter.com/grsecurity/statuses/309805924749541376	Third Party Advisory
6	http://twitter.com/grsecurity/statuses/309805924749541376	Third Party Advisory
7	http://www.exploit-db.com/exploits/24747	Third Party Advisory VDB Entry
8	http://www.exploit-db.com/exploits/24747	Third Party Advisory VDB Entry
9	http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4	Vendor Advisory
10	http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4	Vendor Advisory
11	http://www.openwall.com/lists/oss-security/2013/03/08/2	Mailing List Third Party Advisory
12	http://www.openwall.com/lists/oss-security/2013/03/08/2	Mailing List Third Party Advisory
13	https://bugzilla.redhat.com/show_bug.cgi?id=919315	Issue Tracking Third Party Advisory
14	https://bugzilla.redhat.com/show_bug.cgi?id=919315	Issue Tracking Third Party Advisory
15	https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1	Exploit Patch Third Party Advisory
16	https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1	Exploit Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-20	不適切な入力確認	https://cwe.mitre.org/data/definitions/20.html