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Date: Wed, 2 Jul 2008 08:48:02 +0200
From: Ludwig Nussel <>
Subject: Re: openldap DoS

Josh Bressers wrote:
> On 30 June 2008, Ludwig Nussel wrote:
> > Remote unauthenticated attackers can trigger an assertion in the ASN.1 BER
> > decoding of openlap and crash the server:
> >;selectid=5580
> > 
> The patch is here it seems:

Looks like the change was broken. Citing our maintainer from bugzilla:

--- Comment #7 from Ralf Haferkamp <>  2008-07-02 00:38:08 MDT ---
The OpenLDAP commit log just turned up this:

Update of /repo/OpenLDAP/pkg/ldap/libraries/liblber

Modified Files:
        io.c  1.121 -> 1.122

Log Message:
ITS#5580: Revert prev commit, failed on byte-at-a-time input. Different
approach used here.

The thread discussing those changes starts here:


 (o_   Ludwig Nussel
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nuernberg)

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