Date: Wed, 12 Jun 2013 22:00:52 +0200 From: Yves-Alexis Perez <corsac@...ian.org> To: oss-security@...ts.openwall.com Subject: Re: Fail2ban 0.8.9, Denial of Service (Apache rules only) Can someone assign a CVE for this fail2ban issue? On sam., 2013-06-08 at 07:44 +0200, Krzysztof Katowicz-Kowalewski wrote: > Version 0.8.9 (latest) of Fail2ban allows to perform remote denial of > service for arbitrary chosen IP address. Address listed on Fail2ban's > whitelist are not affected. The vulnerability exists in Apache rules > and it is caused by improper validation of a log file by regular > expression. Malicious user can easily inject his own data to analyzed > logs and deceive monitoring engine. > > Affected files: > /filter.d/apache-auth.conf > /filter.d/apache-nohome.conf > /filter.d/apache-noscript.conf > /filter.d/apache-overflows.conf > > Time frames: > 01.06.2013 - Cyril Jaquier (contact section) has been informed about the vulnerability (no response) > 08.06.2013 - The vulnerability has been released to the public. > > More information, including proof of concept and patches is available here: > https://vndh.net/note:fail2ban-089-denial-service Thanks in advance, -- Yves-Alexis Download attachment "signature.asc" of type "application/pgp-signature" (491 bytes)
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