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JVN脆弱性詳細

Linux kernel の xfs_readlink 関数におけるバッファオーバーフローの脆弱性

Title	Linux kernel の xfs_readlink 関数におけるバッファオーバーフローの脆弱性
Summary	Linux kernel の XFS の fs/xfs/xfs_vnodeops.c 内にある xfs_readlink 関数には、CONFIG_XFS_DEBUG が無効の場合、バッファオーバーフローの脆弱性が存在します。
Possible impacts	ローカルユーザにより、過度に長いパス名のシンボリックリンクを含む XFS イメージを介して、サービス運用妨害 (メモリ破損およびクラッシュ) 状態にされる、および任意のコードを実行される可能性があります。
Solution	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	Jan. 27, 2012, midnight
Registration Date	Jan. 31, 2012, 4:19 p.m.
Last Update	Jan. 31, 2012, 4:19 p.m.

Affected System

Linux

Linux Kernel 2.6

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-2011-4077	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4077
National Vulnerability Database (NVD)
2	CVE-2011-4077	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-4077

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-119	https://jvndb.jvn.jp/ja/cwe/CWE-119.html

ベンダー情報

No	Name	URL
Linux Kernel
1	Linux Kernel Archives	http://www.kernel.org
Red Hat Security Advisory
2	RHSA-2012:0007	https://rhn.redhat.com/errata/RHSA-2012-0007.html

Change Log

No	Changed Details	Date of change
0	[2012年01月31日] 掲載	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2011-4077

Summary	Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via an XFS image containing a symbolic link with a long pathname.
Publication Date	Jan. 28, 2012, 12:55 a.m.
Registration Date	Jan. 28, 2021, 4:39 p.m.
Last Update	Nov. 21, 2024, 10:31 a.m.

Affected software configurations

Related information, measures and tools

No	URL	タグ
1	http://marc.info/?l=bugtraq&m=139447903326211&w=2	Mailing List Third Party Advisory
2	http://oss.sgi.com/archives/xfs/2011-10/msg00345.html	Patch Third Party Advisory
3	http://secunia.com/advisories/48964	Broken Link
4	http://www.openwall.com/lists/oss-security/2011/10/26/1	Mailing List Patch Third Party Advisory
5	http://www.openwall.com/lists/oss-security/2011/10/26/3	Mailing List Patch Third Party Advisory
6	http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/	Exploit Third Party Advisory
7	https://bugzilla.redhat.com/show_bug.cgi?id=749156	Issue Tracking Patch Third Party Advisory
8	http://marc.info/?l=bugtraq&m=139447903326211&w=2	Mailing List Third Party Advisory
9	https://bugzilla.redhat.com/show_bug.cgi?id=749156	Issue Tracking Patch Third Party Advisory
10	http://xorl.wordpress.com/2011/12/07/cve-2011-4077-linux-kernel-xfs-readlink-memory-corruption/	Exploit Third Party Advisory
11	http://www.openwall.com/lists/oss-security/2011/10/26/3	Mailing List Patch Third Party Advisory
12	http://www.openwall.com/lists/oss-security/2011/10/26/1	Mailing List Patch Third Party Advisory
13	http://secunia.com/advisories/48964	Broken Link
14	http://oss.sgi.com/archives/xfs/2011-10/msg00345.html	Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-119	バッファエラー	https://cwe.mitre.org/data/definitions/118.html