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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.
CVSS2.0 : 警告
Score 5
Vector AV:N/AC:L/Au:N/C:N/I:N/A:P
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)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
0 [2012年07月02日]
  掲載		 Feb. 17, 2018, 10:37 a.m.
NVD Vulnerability Information
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.
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
Common Vulnerabilities List