OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

BID:46831

Info

OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

Bugtraq ID: 46831
Class: Design Error
CVE: CVE-2011-1081
Remote: Yes
Local: No
Published: Jan 03 2011 12:00AM
Updated: Apr 13 2015 10:23PM
Credit: Serge Dubrouski
Vulnerable: Ubuntu Ubuntu Linux 9.10 sparc
Ubuntu Ubuntu Linux 9.10 powerpc
Ubuntu Ubuntu Linux 9.10 lpia
Ubuntu Ubuntu Linux 9.10 i386
Ubuntu Ubuntu Linux 9.10 ARM
Ubuntu Ubuntu Linux 9.10 amd64
Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 10.10 powerpc
Ubuntu Ubuntu Linux 10.10 i386
Ubuntu Ubuntu Linux 10.10 ARM
Ubuntu Ubuntu Linux 10.10 amd64
Ubuntu Ubuntu Linux 10.04 sparc
Ubuntu Ubuntu Linux 10.04 powerpc
Ubuntu Ubuntu Linux 10.04 i386
Ubuntu Ubuntu Linux 10.04 ARM
Ubuntu Ubuntu Linux 10.04 amd64
SuSE SUSE Linux Enterprise 11 SP1
S.u.S.E. openSUSE 11.4
S.u.S.E. openSUSE 11.3
S.u.S.E. openSUSE 11.2
Redhat Enterprise Linux Workstation Optional 6
Redhat Enterprise Linux Workstation 6
Redhat Enterprise Linux Server Optional 6
Redhat Enterprise Linux Server 6
Redhat Enterprise Linux HPC Node Optional 6
Redhat Enterprise Linux HPC Node 6
Redhat Enterprise Linux Desktop Optional 6
Redhat Enterprise Linux Desktop 6
OpenLDAP OpenLDAP 2.4.23
OpenLDAP OpenLDAP 2.4.22
OpenLDAP OpenLDAP 2.4.3
OpenLDAP OpenLDAP 2.4.2
OpenLDAP OpenLDAP 2.4.1
OpenLDAP OpenLDAP 2.4
Mandriva Linux Mandrake 2010.1 x86_64
Mandriva Linux Mandrake 2010.1
Mandriva Linux Mandrake 2010.0 x86_64
Mandriva Linux Mandrake 2010.0
Mandriva Linux Mandrake 2009.0 x86_64
Mandriva Linux Mandrake 2009.0
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
Gentoo Linux
Not Vulnerable: OpenLDAP OpenLDAP 2.4.24

Discussion

OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

OpenLDAP is prone to a remote denial-of-service vulnerability that affects the 'modify relative distinguished name' (modrdn) command.

Attackers can exploit this issue to deny service to legitimate users by crashing affected 'slapd' servers.

Exploit / POC

OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

Attackers use readily available network utilities to exploit this vulnerability. The following command demonstrates this issue:

ldapmodrdn -x -H ldap://ldapserver -r '' o=test

Solution / Fix

OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.


Ubuntu Ubuntu Linux 9.10 sparc

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.04 LTS sparc

MandrakeSoft Enterprise Server 5 x86_64

Ubuntu Ubuntu Linux 9.10 powerpc

Ubuntu Ubuntu Linux 10.10 ARM

Ubuntu Ubuntu Linux 8.04 LTS amd64

MandrakeSoft Enterprise Server 5

Ubuntu Ubuntu Linux 9.10 lpia

Mandriva Linux Mandrake 2010.1 x86_64

Mandriva Linux Mandrake 2010.0

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 10.10 amd64

Mandriva Linux Mandrake 2010.0 x86_64

Ubuntu Ubuntu Linux 10.04 powerpc

Mandriva Linux Mandrake 2010.1

Mandriva Linux Mandrake 2009.0

Ubuntu Ubuntu Linux 9.10 i386

Ubuntu Ubuntu Linux 10.10 powerpc

Ubuntu Ubuntu Linux 10.04 amd64

Ubuntu Ubuntu Linux 9.10 ARM

Ubuntu Ubuntu Linux 9.10 amd64

Ubuntu Ubuntu Linux 8.04 LTS i386

Mandriva Linux Mandrake 2009.0 x86_64

Ubuntu Ubuntu Linux 10.04 ARM

Ubuntu Ubuntu Linux 10.10 i386

Ubuntu Ubuntu Linux 10.04 sparc

Ubuntu Ubuntu Linux 10.04 i386

References

OpenLDAP 'modrdn' NULL OldDN Remote Denial of Service Vulnerability

References:

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