NVD Vulnerability Detail

CVE-2011-4957

Summary	The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.
Publication Date	June 28, 2012, 6:55 a.m.
Registration Date	Jan. 28, 2021, 4:40 p.m.
Last Update	Nov. 21, 2024, 10:33 a.m.

CVSS2.0 : MEDIUM
Score	5.0
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
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)	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)	低
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:wordpress:wordpress:3.0.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.11:::::::*
cpe:2.3:a:wordpress:wordpress:1.3.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.0:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.4:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.3.2:::::::*
cpe:2.3:a:wordpress:wordpress:3.0:::::::*
cpe:2.3:a:wordpress:wordpress:2.8:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.7:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.2:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.5:a::::::
cpe:2.3:a:wordpress:wordpress:2.7.1:::::::*
cpe:2.3:a:wordpress:wordpress:0.71:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.4:a::::::
cpe:2.3:a:wordpress:wordpress:2.6.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.3.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.9:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.7:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.9:::::::*
cpe:2.3:a:wordpress:wordpress::::::::		3.1
cpe:2.3:a:wordpress:wordpress:2.3.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.5:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.10:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.0:::::::*
cpe:2.3:a:wordpress:wordpress:1.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.5:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.3.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.8:::::::*
cpe:2.3:a:wordpress:wordpress:2.3:::::::*

Related information, measures and tools

No	URL	タグ
1	http://core.trac.wordpress.org/ticket/16892
2	http://secunia.com/advisories/44038	Vendor Advisory
3	http://secunia.com/advisories/49138	Vendor Advisory
4	http://wordpress.org/news/2011/04/wordpress-3-1-1/
5	http://www.debian.org/security/2012/dsa-2470
6	http://www.openwall.com/lists/oss-security/2012/04/19/17
7	http://www.openwall.com/lists/oss-security/2012/04/19/6
8	http://core.trac.wordpress.org/ticket/16892
9	http://www.openwall.com/lists/oss-security/2012/04/19/6
10	http://www.openwall.com/lists/oss-security/2012/04/19/17
11	http://www.debian.org/security/2012/dsa-2470
12	http://wordpress.org/news/2011/04/wordpress-3-1-1/
13	http://secunia.com/advisories/49138	Vendor Advisory
14	http://secunia.com/advisories/44038	Vendor 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

JVN Vulnerability Information

WordPress の wp-includes/formatting.php におけるサービス運用妨害 (クラッシュ) の脆弱性

Title	WordPress の wp-includes/formatting.php におけるサービス運用妨害 (クラッシュ) の脆弱性
Summary	WordPress の wp-includes/formatting.php 内の make_clickable 関数は、PCRE ライブラリへ渡す前に URL を適切にチェックしないため、サービス運用妨害 (クラッシュ) 状態となる脆弱性が存在します。
Possible impacts	第三者により、多数の再帰呼び出しを誘発する、巧妙に細工された URL を伴ったコメントを介して、サービス運用妨害 (クラッシュ) 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 5, 2011, midnight
Registration Date	July 2, 2012, 11:08 a.m.
Last Update	July 2, 2012, 11:08 a.m.

Affected System

WordPress.org

WordPress 3.1.1 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-2011-4957	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4957
National Vulnerability Database (NVD)
2	CVE-2011-4957	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-4957

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
Debian セキュリティ勧告
1	DSA-2470	http://www.debian.org/security/2012/dsa-2470
WordPress.org
2	#16892 (make_clickable segfault)	http://core.trac.wordpress.org/ticket/16892
3	WordPress 3.1.1	http://wordpress.org/news/2011/04/wordpress-3-1-1/

Change Log

No	Changed Details	Date of change
0	[2012年07月02日] 掲載	Feb. 17, 2018, 10:37 a.m.

Configuration1	or higher	or less	more than	less than
cpe:2.3:a:wordpress:wordpress:3.0.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.11:::::::*
cpe:2.3:a:wordpress:wordpress:1.3.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.0:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.4:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.3.2:::::::*
cpe:2.3:a:wordpress:wordpress:3.0:::::::*
cpe:2.3:a:wordpress:wordpress:2.8:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.7:::::::*
cpe:2.3:a:wordpress:wordpress:2.1.2:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.5:a::::::
cpe:2.3:a:wordpress:wordpress:2.7.1:::::::*
cpe:2.3:a:wordpress:wordpress:0.71:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.4:a::::::
cpe:2.3:a:wordpress:wordpress:2.6.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.3.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.9:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.2.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.7:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.0.1:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.4:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.9:::::::*
cpe:2.3:a:wordpress:wordpress::::::::		3.1
cpe:2.3:a:wordpress:wordpress:2.3.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.0.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.6.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.5:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.2:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.10:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.0:::::::*
cpe:2.3:a:wordpress:wordpress:1.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1:::::::*
cpe:2.3:a:wordpress:wordpress:1.2.5:::::::*
cpe:2.3:a:wordpress:wordpress:3.0.3:::::::*
cpe:2.3:a:wordpress:wordpress:1.5.1.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.9.1.1:::::::*
cpe:2.3:a:wordpress:wordpress:2.3.2:::::::*
cpe:2.3:a:wordpress:wordpress:1.3:::::::*
cpe:2.3:a:wordpress:wordpress:2.6:::::::*
cpe:2.3:a:wordpress:wordpress:2.8.5:::::::*
cpe:2.3:a:wordpress:wordpress:2.0.8:::::::*
cpe:2.3:a:wordpress:wordpress:2.3:::::::*