Wget NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

BID:36205

Info

Wget NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Bugtraq ID: 36205
Class: Design Error
CVE: CVE-2009-3490
Remote: Yes
Local: No
Published: Aug 05 2009 12:00AM
Updated: Apr 13 2015 09:28PM
Credit: Micah Cowan
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
Sun Solaris 9_x86
Sun Solaris 9_sparc
Sun Solaris 10_x86
Sun Solaris 10_sparc
Sun OpenSolaris build snv_99
Sun OpenSolaris build snv_98
Sun OpenSolaris build snv_96
Sun OpenSolaris build snv_95
Sun OpenSolaris build snv_94
Sun OpenSolaris build snv_93
Sun OpenSolaris build snv_92
Sun OpenSolaris build snv_91
Sun OpenSolaris build snv_90
Sun OpenSolaris build snv_89
Sun OpenSolaris build snv_88
Sun OpenSolaris build snv_87
Sun OpenSolaris build snv_86
Sun OpenSolaris build snv_85
Sun OpenSolaris build snv_84
Sun OpenSolaris build snv_83
Sun OpenSolaris build snv_82
Sun OpenSolaris build snv_81
Sun OpenSolaris build snv_80
Sun OpenSolaris build snv_78
Sun OpenSolaris build snv_77
Sun OpenSolaris build snv_76
Sun OpenSolaris build snv_68
Sun OpenSolaris build snv_67
Sun OpenSolaris build snv_64
Sun OpenSolaris build snv_61
Sun OpenSolaris build snv_59
Sun OpenSolaris build snv_58
Sun OpenSolaris build snv_57
Sun OpenSolaris build snv_54
Sun OpenSolaris build snv_51
Sun OpenSolaris build snv_50
Sun OpenSolaris build snv_49
Sun OpenSolaris build snv_48
Sun OpenSolaris build snv_47
Sun OpenSolaris build snv_45
Sun OpenSolaris build snv_41
Sun OpenSolaris build snv_39
Sun OpenSolaris build snv_38
Sun OpenSolaris build snv_37
Sun OpenSolaris build snv_36
Sun OpenSolaris build snv_29
Sun OpenSolaris build snv_28
Sun OpenSolaris build snv_22
Sun OpenSolaris build snv_19
Sun OpenSolaris build snv_13
Sun OpenSolaris build snv_125
Sun OpenSolaris build snv_124
Sun OpenSolaris build snv_123
Sun OpenSolaris build snv_122
Sun OpenSolaris build snv_121
Sun OpenSolaris build snv_120
Sun OpenSolaris build snv_119
Sun OpenSolaris build snv_118
Sun OpenSolaris build snv_117
Sun OpenSolaris build snv_116
Sun OpenSolaris build snv_115
Sun OpenSolaris build snv_114
Sun OpenSolaris build snv_113
Sun OpenSolaris build snv_112
Sun OpenSolaris build snv_111a
Sun OpenSolaris build snv_111
Sun OpenSolaris build snv_110
Sun OpenSolaris build snv_109
Sun OpenSolaris build snv_108
Sun OpenSolaris build snv_107
Sun OpenSolaris build snv_106
Sun OpenSolaris build snv_105
Sun OpenSolaris build snv_104
Sun OpenSolaris build snv_103
Sun OpenSolaris build snv_102
Sun OpenSolaris build snv_101a
Sun OpenSolaris build snv_101
Sun OpenSolaris build snv_100
Sun OpenSolaris build snv_02
Sun OpenSolaris build snv_01
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux WS 3
Redhat Enterprise Linux Virtualization 5 Server
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux ES 3
Redhat Enterprise Linux Desktop 5 client
Redhat Enterprise Linux AS 4
Redhat Enterprise Linux AS 3
Redhat Enterprise Linux Desktop version 4
Redhat Enterprise Linux 5 Server
Redhat Desktop 3.0
Mandriva Linux Mandrake 2008.0 x86_64
Mandriva Linux Mandrake 2008.0
GNU wget 1.11.4
GNU wget 1.10.2
GNU wget 1.10.1
GNU wget 1.10
GNU wget 1.9.1
GNU wget 1.9
GNU wget 1.8.2
GNU wget 1.8.1
GNU wget 1.8
GNU wget 1.7.1
GNU wget 1.7
GNU wget 1.6
GNU wget 1.5.3
Gentoo Linux
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
Debian Linux 4.0 sparc
Debian Linux 4.0 s/390
Debian Linux 4.0 powerpc
Debian Linux 4.0 mipsel
Debian Linux 4.0 mips
Debian Linux 4.0 m68k
Debian Linux 4.0 ia-64
Debian Linux 4.0 ia-32
Debian Linux 4.0 hppa
Debian Linux 4.0 armel
Debian Linux 4.0 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Avaya Aura SIP Enablement Services 5.1
Avaya Aura Communication Manager 5.1
Avaya Aura Application Enablement Services 3.1.6
Avaya Aura Application Enablement Services 4.0
Avaya Aura Application Enablement Services 3.1
Not Vulnerable: Sun OpenSolaris build snv_126
Avaya Aura SIP Enablement Services 5.2.1 SSP#1

Discussion

Wget NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

Wget 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.

Wget 1.11.4 is vulnerable; other versions may also be affected.

Exploit / POC

Wget NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

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

Solution / Fix

Wget NULL Character CA SSL Certificate Validation Security Bypass Vulnerability

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


Ubuntu Ubuntu Linux 8.10 powerpc

Debian Linux 5.0 alpha

Mandriva Linux Mandrake 2008.0

Ubuntu Ubuntu Linux 9.04 sparc

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Ubuntu Ubuntu Linux 8.10 sparc

Ubuntu Ubuntu Linux 9.04 lpia

Debian Linux 5.0 armel

Debian Linux 5.0 mips

Ubuntu Ubuntu Linux 9.04 amd64

Debian Linux 5.0 sparc

Debian Linux 4.0 arm

Debian Linux 4.0 powerpc

Ubuntu Ubuntu Linux 8.10 i386

Debian Linux 5.0 s/390

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 6.06 LTS i386

Debian Linux 5.0 hppa

Debian Linux 4.0 sparc

Ubuntu Ubuntu Linux 8.04 LTS i386

References

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