CVE-2009-5023
The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-5023- CVSS 2.0
- 4.7 Medium
AV:L/AC:M/Au:N/C:N/I:C/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-5023- Updated
- 2026-11-02
EUVDEUVD-2009-4981 No score
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.
- Record
EUVD-2009-4981- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h7g6-frrr-69cx No score
The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf...
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.
- Record
GHSA-h7g6-frrr-69cx- Weakness
- CWE-59
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2009-5023- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-5023 No score
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.
- Record
DEBIAN-CVE-2009-5023- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10347-1 No score
SuSEfirewall2-fail2ban-0.9.5-1.1 on GA media
These are all security issues fixed in the SuSEfirewall2-fail2ban-0.9.5-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10347-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
fail2banDebian:12 |
before 0.8.4+svn20110323-1 | 0.8.4+svn20110323-1 |
fail2banDebian:13 |
before 0.8.4+svn20110323-1 | 0.8.4+svn20110323-1 |
fail2banDebian:14 |
before 0.8.4+svn20110323-1 | 0.8.4+svn20110323-1 |
fail2banopenSUSE:Tumbleweed From an advisory covering 4 CVEs |
before 0.9.5-1.1 | 0.9.5-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-5023 is a medium vulnerability (CVSS 4.7) in Fail2ban, published June 10, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. Fixed in fail2ban 0.8.4+svn20110323-1.