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CVE-2009-5023

Date: June 10, 2014

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.

Severity Score

Related Resources (7)

http://secunia.com/advisories/58841
https://nvd.nist.gov/vuln/detail/CVE-2009-5023
https://github.com/fail2ban/fail2ban/blob/sdist/0.8.5/ChangeLog
http://security.gentoo.org/glsa/glsa-201406-03.xml
https://security-tracker.debian.org/tracker/CVE-2009-5023
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=544232
https://www.mend.io/vulnerability-database/CVE-2009-5023

Severity Score

Weakness Type (CWE)

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

CWE-59

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): COMPLETE
Availability (A): NONE
Additional information:

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