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Date: Thu, 26 May 2011 13:09:12 +0200
From: Szalay Attila <>
To: Open Source Software Security <>
Subject: CVE Request -- syslog-ng -- Possible DoS

Hi All,

In syslog-ng if a recent enough libpcre is installed (ie. 8.12 or newer)
there is a possible Denial of Service.

In our (BalaBit) opinion tis is not a big security issue, because if you
use the vulnerable setting you will run into the DoS for sure without
any malicious attack.

The attack vector is that the attacker send a message which the regexp
not match. 

But because of this bug get this amount of attention, it' may worth the
CVE id.


Szalay Attila
BalaBit IT Kft.
Security Team Leader

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