Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

BID:36079

Info

Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Bugtraq ID: 36079
Class: Design Error
CVE: CVE-2009-2474
Remote: Yes
Local: No
Published: Aug 18 2009 12:00AM
Updated: May 07 2015 05:11PM
Credit: Joe Orton
Vulnerable: Ubuntu Ubuntu Linux 9.04 sparc
Ubuntu Ubuntu Linux 9.04 powerpc
Ubuntu Ubuntu Linux 9.04 lpia
Ubuntu Ubuntu Linux 9.04 i386
Ubuntu Ubuntu Linux 9.04 amd64
Ubuntu Ubuntu Linux 8.10 sparc
Ubuntu Ubuntu Linux 8.10 powerpc
Ubuntu Ubuntu Linux 8.10 lpia
Ubuntu Ubuntu Linux 8.10 i386
Ubuntu Ubuntu Linux 8.10 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 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
TortoiseSVN TortoiseSVN 1.6
TortoiseSVN TortoiseSVN 1.4.5
TortoiseSVN TortoiseSVN 1.4.4
TortoiseSVN TortoiseSVN 1.4.3
TortoiseSVN TortoiseSVN 1.4.2
TortoiseSVN TortoiseSVN 1.4.1
TortoiseSVN TortoiseSVN 1.4
TortoiseSVN TortoiseSVN 1.3.5
TortoiseSVN TortoiseSVN 1.2.6
TortoiseSVN TortoiseSVN 1.1.7
TortoiseSVN TortioseSVN 1.6.4
TortoiseSVN TortioseSVN 1.5
RedHat Enterprise Linux WS 4
RedHat Enterprise Linux ES 4.8.z
RedHat Enterprise Linux ES 4
RedHat Enterprise Linux Desktop Workstation 5 client
RedHat Enterprise Linux Desktop version 4
Red Hat Enterprise Linux EUS 5.4.z server
Red Hat Enterprise Linux Desktop 5 client
Red Hat Enterprise Linux AS 4.8.z
Red Hat Enterprise Linux AS 4
Red Hat Enterprise Linux 5 Server
Pardus Linux 2009 0
Neon Neon 0.28.5
Neon Neon 0.28.3
Neon Neon 0.28.2
Neon Neon 0.28.1
Neon Neon 0.28
Neon Client Library 0.26.3
Neon Client Library 0.26.2
Neon Client Library 0.26.1
Neon Client Library 0.26
Neon Client Library 0.24.6
Neon Client Library 0.24.5
Neon Client Library 0.24.4
Neon Client Library 0.24.3
Neon Client Library 0.24.2
Neon Client Library 0.24.1
Neon Client Library 0.24
Neon Client Library 0.23.8
Neon Client Library 0.23.7
Neon Client Library 0.23.6
Neon Client Library 0.23.5
Neon Client Library 0.23.4
Neon Client Library 0.23.3
Neon Client Library 0.23.2
Neon Client Library 0.23.1
Neon Client Library 0.23
Neon Client Library 0.19.3
- Debian Linux 3.0 sparc
- Debian Linux 3.0 s/390
- Debian Linux 3.0 ppc
- Debian Linux 3.0 mipsel
- Debian Linux 3.0 mips
- Debian Linux 3.0 m68k
- Debian Linux 3.0 ia-64
- Debian Linux 3.0 ia-32
- Debian Linux 3.0 hppa
- Debian Linux 3.0 arm
- Debian Linux 3.0 alpha
- Debian Linux 3.0
Mandriva Linux Mandrake 2009.1 x86_64
Mandriva Linux Mandrake 2009.1
Mandriva Linux Mandrake 2009.0 x86_64
Mandriva Linux Mandrake 2009.0
Mandriva Linux Mandrake 2008.1 x86_64
Mandriva Linux Mandrake 2008.1
Mandriva Linux Mandrake 2008.0 x86_64
Mandriva Linux Mandrake 2008.0
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
MandrakeSoft Corporate Server 4.0
Avaya Voice Portal 5.0 SP2
Avaya Voice Portal 5.0 SP1
Avaya Voice Portal 5.0
Avaya Messaging Storage Server 3.1
Avaya Message Networking 3.1
Avaya Intuity AUDIX LX 2.0 SP2
Avaya Intuity AUDIX LX 2.0 SP1
Avaya Intuity AUDIX LX 2.0
Apple Mac OS X Server 10.6.4
Apple Mac OS X Server 10.6.3
Apple Mac OS X Server 10.6.2
Apple Mac OS X Server 10.6.1
Apple Mac OS X Server 10.6
Apple Mac OS X 10.6.4
Apple Mac OS X 10.6.3
Apple Mac OS X 10.6.2
Apple Mac OS X 10.6.1
Apple Mac OS X 10.6
Not Vulnerable: TortoiseSVN TortoiseSVN 1.6.5
Neon Neon 0.28.6
Apple Mac OS X Server 10.6.5

Discussion

Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Neon is prone to a security-bypass vulnerability because it fails to properly validate the domain name in a signed CA certificate, allowing attackers to substitute malicious SSL certificates for trusted ones.

This issue affects Neon when compiled against OpenSSL.

Successfully exploiting this issue allows attackers to perform man-in-the-middle attacks or impersonate trusted servers, which will aid in further attacks.

Versions prior to Neon 0.28.6 are vulnerable. Additional applications that use the affected library may also be vulnerable.

Exploit / POC

Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Attackers use man-in-the-middle attacks to exploit this issue.

Solution / Fix

Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Solution:
Updates are available. Please see the references for details.


Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Ubuntu Ubuntu Linux 8.04 LTS sparc

Apple Mac OS X Server 10.6

Ubuntu Ubuntu Linux 6.06 LTS sparc

Mandriva Linux Mandrake 2008.0 x86_64

Ubuntu Ubuntu Linux 8.04 LTS amd64

Mandriva Linux Mandrake 2008.0

Ubuntu Ubuntu Linux 9.04 sparc

Ubuntu Ubuntu Linux 9.04 powerpc

Ubuntu Ubuntu Linux 9.04 i386

Ubuntu Ubuntu Linux 8.10 sparc

Ubuntu Ubuntu Linux 9.04 lpia

Apple Mac OS X 10.6

Mandriva Linux Mandrake 2009.0 x86_64

Ubuntu Ubuntu Linux 9.04 amd64

Mandriva Linux Mandrake 2009.1

Ubuntu Ubuntu Linux 8.10 amd64

Mandriva Linux Mandrake 2008.1 x86_64

Mandriva Linux Mandrake 2008.1

Mandriva Linux Mandrake 2009.1 x86_64

Ubuntu Ubuntu Linux 8.10 i386

MandrakeSoft Enterprise Server 5 x86_64

Ubuntu Ubuntu Linux 6.06 LTS powerpc

MandrakeSoft Enterprise Server 5

Ubuntu Ubuntu Linux 8.04 LTS lpia

Neon Client Library 0.19.3

Neon Client Library 0.23

Neon Client Library 0.23.1

Neon Client Library 0.23.2

Neon Client Library 0.23.3

Neon Client Library 0.23.4

Neon Client Library 0.23.6

Neon Client Library 0.23.7

Neon Client Library 0.23.8

Neon Client Library 0.24.1

Neon Client Library 0.24.2

Neon Client Library 0.24.3

Neon Client Library 0.24.4

Neon Client Library 0.24.5

Neon Client Library 0.24.6

Neon Client Library 0.26

Neon Client Library 0.26.1

Neon Client Library 0.26.2

Neon Client Library 0.26.3

Neon Neon 0.28

Neon Neon 0.28.1

Neon Neon 0.28.2

Neon Neon 0.28.3

Neon Neon 0.28.5

Apple Mac OS X Server 10.6.1

Apple Mac OS X 10.6.1

Apple Mac OS X Server 10.6.2

Apple Mac OS X 10.6.3

Apple Mac OS X 10.6.4

Apple Mac OS X Server 10.6.4

MandrakeSoft Multi Network Firewall 2.0

MandrakeSoft Corporate Server 3.0

MandrakeSoft Corporate Server 3.0 x86_64

References

Neon NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

References:

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