GnuTLS X.509 Certificate Chain Security Bypass Vulnerability

BID:32232

Info

GnuTLS X.509 Certificate Chain Security Bypass Vulnerability

Bugtraq ID: 32232
Class: Unknown
CVE: CVE-2008-4989
Remote: Yes
Local: No
Published: Nov 10 2008 12:00AM
Updated: Apr 13 2015 09:56PM
Credit: Martin von Gagern
Vulnerable: 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 7.10 sparc
Ubuntu Ubuntu Linux 7.10 powerpc
Ubuntu Ubuntu Linux 7.10 lpia
Ubuntu Ubuntu Linux 7.10 i386
Ubuntu Ubuntu Linux 7.10 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
SuSE SUSE Linux Enterprise Server 10
SuSE SUSE Linux Enterprise 11
SuSE SUSE Linux Enterprise 10
Sun Solaris 10_x86
Sun Solaris 10_sparc
Sun OpenSolaris build snv_99
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_57
Sun OpenSolaris build snv_50
Sun OpenSolaris build snv_47
Sun OpenSolaris build snv_45
Sun OpenSolaris build snv_39
Sun OpenSolaris build snv_36
Sun OpenSolaris build snv_29
Sun OpenSolaris build snv_22
Sun OpenSolaris build snv_19
Sun OpenSolaris build snv_13
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
Slackware Linux 12.1
Slackware Linux 12.0
Slackware Linux -current
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
S.u.S.E. openSUSE 10.3
rPath rPath Linux 2
Redhat Enterprise Linux Desktop Workstation 5 client
Redhat Enterprise Linux Desktop 5 client
Redhat Enterprise Linux 5 Server
Pardus Linux 2008 0
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
GNU GnuTLS 2.4.1
GNU GnuTLS 2.4
GNU GnuTLS 2.2.5
GNU GnuTLS 2.2.4
GNU GnuTLS 2.2.3
GNU GnuTLS 2.2.2
GNU GnuTLS 2.2.1
GNU GnuTLS 2.2
GNU GnuTLS 2.0
GNU GnuTLS 1.4.3
GNU GnuTLS 1.4.2
GNU GnuTLS 1.4
GNU GnuTLS 1.3.4
GNU GnuTLS 1.3.3
GNU GnuTLS 1.3.2
GNU GnuTLS 1.3.1
GNU GnuTLS 1.3
GNU GnuTLS 1.2.10
GNU GnuTLS 1.2.9
GNU GnuTLS 1.2.8
GNU GnuTLS 1.2.7
GNU GnuTLS 1.2.6
GNU GnuTLS 1.2.5
GNU GnuTLS 1.2.4
GNU GnuTLS 1.2.3
GNU GnuTLS 1.2.2
GNU GnuTLS 1.2.1
GNU GnuTLS 1.2
GNU GnuTLS 1.0.25
GNU GnuTLS 1.0.23
GNU GnuTLS 1.0.17
GNU GnuTLS 1.0.16
GNU GnuTLS 1.0.15
GNU GnuTLS 1.0.14
GNU GnuTLS 1.0.13
GNU GnuTLS 1.0.9
GNU GnuTLS 1.0.8
GNU GnuTLS 1.0.7
GNU GnuTLS 1.0.6
GNU GnuTLS 1.0.5
GNU GnuTLS 1.0.4
GNU GnuTLS 1.0.3
GNU GnuTLS 1.0.2
GNU GnuTLS 1.0.1
GNU GnuTLS 1.0
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 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Not Vulnerable: Sun OpenSolaris build snv_111a
GNU GnuTLS 2.6.1

Discussion

GnuTLS X.509 Certificate Chain Security Bypass Vulnerability

GnuTLS is prone to a security-bypass vulnerability because the application fails to properly validate chained X.509 certificates.

Successfully exploiting this issue allows attackers to perform man-in-the-middle attacks by impersonating trusted servers. Unsuspecting users may be under a false sense of security that can aid attackers in launching further attacks.

Versions prior to GnuTLS 2.6.1 are vulnerable.

Exploit / POC

GnuTLS X.509 Certificate Chain Security Bypass Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

GnuTLS X.509 Certificate Chain Security Bypass Vulnerability

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


Ubuntu Ubuntu Linux 7.10 powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Debian Linux 5.0 alpha

Mandriva Linux Mandrake 2008.0

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Ubuntu Ubuntu Linux 8.10 sparc

Debian Linux 5.0 armel

Mandriva Linux Mandrake 2009.0 x86_64

Debian Linux 5.0 mips

Debian Linux 4.0 mips

Debian Linux 5.0 sparc

Mandriva Linux Mandrake 2008.1 x86_64

Debian Linux 4.0 arm

Mandriva Linux Mandrake 2008.1

Debian Linux 4.0 powerpc

Ubuntu Ubuntu Linux 8.10 i386

Debian Linux 4.0 m68k

Debian Linux 5.0 s/390

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 7.10 lpia

Ubuntu Ubuntu Linux 6.06 LTS i386

Debian Linux 5.0 hppa

Debian Linux 4.0 sparc

Debian Linux 5.0 m68k

Mandriva Linux Mandrake 2009.0

Ubuntu Ubuntu Linux 7.10 amd64

Ubuntu Ubuntu Linux 8.04 LTS i386

GNU GnuTLS 1.0

GNU GnuTLS 1.0.1

GNU GnuTLS 1.0.15

GNU GnuTLS 1.0.17

GNU GnuTLS 1.0.3

GNU GnuTLS 1.0.5

GNU GnuTLS 1.0.9

GNU GnuTLS 1.2

GNU GnuTLS 1.2.1

GNU GnuTLS 1.2.10

GNU GnuTLS 1.2.2

GNU GnuTLS 1.2.3

GNU GnuTLS 1.2.7

GNU GnuTLS 1.3

GNU GnuTLS 1.3.1

GNU GnuTLS 1.3.3

GNU GnuTLS 1.3.4

GNU GnuTLS 1.4.2

GNU GnuTLS 2.0

GNU GnuTLS 2.2

GNU GnuTLS 2.2.1

GNU GnuTLS 2.2.4

References

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