Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

BID:36203

Info

Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Bugtraq ID: 36203
Class: Design Error
CVE: CVE-2009-2700
Remote: Yes
Local: No
Published: Aug 28 2009 12:00AM
Updated: Apr 13 2015 09:27PM
Credit: The vendor
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
Trolltech Qt 4.5.2
Trolltech Qt 4.5.1
Trolltech Qt 4.3.3
Trolltech Qt 4.3.2
Trolltech Qt 4.3.1
Trolltech Qt 4.3
Trolltech Qt 4.2.3
Trolltech Qt 4.2.1
Trolltech Qt 4.1.5
Trolltech Qt 4.1.4
Trolltech Qt 4.1
Trolltech Qt 4.0.1
Trolltech Qt 4.5
Trolltech Qt 4.2
Trolltech Qt 4.1
SuSE SUSE Linux Enterprise 11
SuSE SUSE Linux Enterprise 10
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
Pardus Linux 2008 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
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
Debian Linux 5.0 sparc
Debian Linux 5.0 s/390
Debian Linux 5.0 powerpc
Debian Linux 5.0 mipsel
Debian Linux 5.0 mips
Debian Linux 5.0 m68k
Debian Linux 5.0 ia-64
Debian Linux 5.0 ia-32
Debian Linux 5.0 hppa
Debian Linux 5.0 armel
Debian Linux 5.0 arm
Debian Linux 5.0 amd64
Debian Linux 5.0 alpha
Debian Linux 5.0
Not Vulnerable:

Discussion

Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

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

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

NOTE: This issue may be related to the issue described in BID 35888 (Mozilla NSS NULL Character CA SSL Certificate Validation Security Bypass Vulnerability). We will update this BID when more information becomes available.

Exploit / POC

Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

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

Solution / Fix

Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

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


Debian Linux 5.0 ia-64

Mandriva Linux Mandrake 2009.1 x86_64

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Ubuntu Ubuntu Linux 8.04 LTS sparc

Ubuntu Ubuntu Linux 8.10 i386

MandrakeSoft Enterprise Server 5 x86_64

Debian Linux 5.0 alpha

Debian Linux 5.0 ia-32

Ubuntu Ubuntu Linux 8.04 LTS amd64

MandrakeSoft Enterprise Server 5

Debian Linux 5.0 s/390

Debian Linux 5.0 mipsel

Ubuntu Ubuntu Linux 9.04 sparc

Ubuntu Ubuntu Linux 9.04 powerpc

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 8.10 lpia

Debian Linux 5.0 hppa

Ubuntu Ubuntu Linux 9.04 i386

Debian Linux 5.0 m68k

Ubuntu Ubuntu Linux 8.10 sparc

Ubuntu Ubuntu Linux 9.04 lpia

Debian Linux 5.0 arm

Mandriva Linux Mandrake 2009.0

Debian Linux 5.0 armel

Debian Linux 5.0

Ubuntu Ubuntu Linux 8.04 LTS i386

Debian Linux 5.0 amd64

Mandriva Linux Mandrake 2009.0 x86_64

Debian Linux 5.0 mips

Ubuntu Ubuntu Linux 9.04 amd64

Debian Linux 5.0 powerpc

Mandriva Linux Mandrake 2009.1

Ubuntu Ubuntu Linux 8.10 amd64

Debian Linux 5.0 sparc

References

Qt NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

References:

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