Vulnerability in Fail2ban

CVE-2009-5023

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.

EPSS: 0.003 (26.6th percentile) — read the EPSS interpretation.

Affected products

  • Fail2ban — versions 0.1.0, 0.1.1, 0.1.2
  • N/a — versions n/a

Weakness classification (CWE)

References