1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200702-05 / fail2ban |
| Release Date | February 16, 2007 |
| Latest Revision | February 16, 2007: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-analyzer/fail2ban | < 0.6.2 | >= 0.6.2 | All supported architectures |
Related bugreports: #157166
A flaw in Fail2ban may allow remote attackers to deny access to arbitrary hosts.
Fail2ban monitors log files for failed authentication attempts and can block hosts responsible for repeated attacks.
A flaw in the method used to parse log entries allows remote, unauthenticated attackers to forge authentication attempts from other hosts.
A remote attacker can add arbitrary hosts to the block list, denying legitimate users access to a resource.
There is no known workaround at this time.
All Fail2ban users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/fail2ban-0.6.2" |