Vulnerability CVE-2009-5023
Published: 2014-06-10

Description:
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.

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

CVSS2 => (AV:L/AC:M/Au:N/C:N/I:C/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.7/10
6.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Complete
None
Affected software
Fail2ban -> Fail2ban 

 References:
https://github.com/fail2ban/fail2ban/blob/sdist/0.8.5/ChangeLog
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544232
http://security.gentoo.org/glsa/glsa-201406-03.xml
http://secunia.com/advisories/58841
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