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Fail2ban における任意のファイルに書き込まれる脆弱性
Title Fail2ban における任意のファイルに書き込まれる脆弱性
Summary

Fail2ban の action.d/ の (1) dshield.conf、(2) mail-buffered.conf、(3) mynetwatchman.conf、および (4) mynetwatchman.conf には、任意のファイルに書き込まれる脆弱性が存在します。

Possible impacts ローカルユーザにより、予測可能な名前を持つ一時ファイルへのシンボリックリンク攻撃を介して、任意のファイルに書き込ま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 Aug. 29, 2009, midnight
Registration Date June 13, 2014, 4:49 p.m.
Last Update June 13, 2014, 4:49 p.m.
CVSS2.0 : 警告
Score 4.7
Vector AV:L/AC:M/Au:N/C:N/I:C/A:N
Affected System
Fail2ban
Fail2ban 0.8.5 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 [2014年06月13日]
  掲載		 Feb. 17, 2018, 10:37 a.m.
NVD Vulnerability Information
CVE-2009-5023
Summary

The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf actions in action.d/ in Fail2ban before 0.8.5 allows local users to write to arbitrary files via a symlink attack on temporary files with predictable names, as demonstrated by /tmp/fail2ban-mail.txt.

Publication Date June 10, 2014, 11:55 p.m.
Registration Date Jan. 29, 2021, 1:28 p.m.
Last Update Nov. 21, 2024, 10:11 a.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:fail2ban:fail2ban:0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.4:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.5:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.9:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.8:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:* 0.8.4
cpe:2.3:a:fail2ban:fail2ban:0.7.7:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.4:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.5.5:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.8.3:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:fail2ban:fail2ban:0.7.6:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List