CVE catalog
CVE-2009-5023
fail2ban: CVE-2009-5023
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | fail2ban | sid | 1.1.1-1 | fixed |
| Debian | fail2ban | forky | 1.1.1-1 | fixed |
| Debian | fail2ban | trixie | 1.1.0-8 | fixed |
| Debian | fail2ban | bookworm | 1.0.2-2 | fixed |
| Opensuse | fail2ban | tumbleweed | 0.9.5-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | fail2ban | source | sid | 0.8.4+svn20110323-1 | low | Not reported | [544232] |
| Debian | fail2ban | source | forky | 0.8.4+svn20110323-1 | low | Not reported | [544232] |
| Debian | fail2ban | source | trixie | 0.8.4+svn20110323-1 | low | Not reported | [544232] |
| Debian | fail2ban | source | bookworm | 0.8.4+svn20110323-1 | low | Not reported | [544232] |
| Opensuse | fail2ban | rpm | tumbleweed | 0.9.5-1.1 | Not reported | OPENSUSE-SU-2024:10347-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [monitoring-plugins-fail2ban]Unknown
Source package: [fail2ban]
Details (1)
1.1.1-3.1· noarch · tumbleweedUnknown · Fixed:
0.9.5-1.1Version impact unknown
dsa · fail2ban · opensuse · tumbleweed
- [fail2ban]Fixed
Source package: [fail2ban]
Details (1)
1.1.1-3.1· x86_64 · tumbleweedFixed · Fixed:
0.9.5-1.1dsa · fail2ban · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [fail2ban]Fixed
Details (2)
1.0.2-2· all · bookwormFixed · Fixed:
0.8.4+svn20110323-1dsa · fail2ban · debian · bookworm; dsa · fail2ban · debian · 12
1.0.2-2· all · bookwormFixed · Fixed:
0.8.4+svn20110323-1dsa · fail2ban · debian · bookworm; dsa · fail2ban · debian · 12
[Debian 13 (Trixie)]
- [fail2ban]Fixed
Details (2)
1.1.0-8· all · trixieFixed · Fixed:
0.8.4+svn20110323-1dsa · fail2ban · debian · 13
1.1.0-8· all · trixieFixed · Fixed:
0.8.4+svn20110323-1dsa · fail2ban · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_10347-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2009-5023]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:10347-1]
- [https://security-tracker.debian.org/tracker/CVE-2009-5023]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]