GNUTLS PKCS RSA Signature Forgery Vulnerability

BID:20027

CVE-2006-4790 |

Info

GNUTLS PKCS RSA Signature Forgery Vulnerability

Bugtraq ID: 20027
Class: Design Error
CVE: CVE-2006-4790
Remote: Yes
Local: No
Published: Sep 14 2006 12:00AM
Updated: Mar 19 2015 08:27AM
Credit: Daniel Bleichenbacher, Yutaka Oiwa, Kazukuni Kobara, and Hajime Watanabe are credited with the discovery of this vulnerability.
Vulnerable: Ubuntu Ubuntu Linux 5.10 sparc
Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 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
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
SuSE SUSE Linux Enterprise Server SDK 9
SuSE SUSE Linux Enterprise Server 9
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE SUSE Linux Enterprise Server 10
SuSE SUSE Linux Enterprise SDK 10
SuSE Linux Openexchange Server
SuSE Linux Desktop 1.0
SuSE Linux Desktop 10
Sun Solaris 10_x86
Sun Solaris 10_sparc
S.u.S.E. UnitedLinux 1.0
S.u.S.E. SuSE Linux School Server for i386
S.u.S.E. SUSE LINUX Retail Solution 8.0
S.u.S.E. Open-Enterprise-Server 9.0
S.u.S.E. Office Server
S.u.S.E. Novell Linux Desktop 9.0
S.u.S.E. Novell Linux Desktop 1.0
S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 10.0
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Professional 9.0 x86_64
S.u.S.E. Linux Professional 9.0
S.u.S.E. Linux Professional 10.1
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 10.1
S.u.S.E. Linux Office Server
S.u.S.E. Linux Enterprise Server for S/390 9.0
S.u.S.E. Linux Enterprise Server for S/390
S.u.S.E. Linux Database Server 0
S.u.S.E. Linux Connectivity Server
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux AS 4
Redhat Desktop 4.0
Mandriva Linux Mandrake 2006.0 x86_64
Mandriva Linux Mandrake 2006.0
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 4.0
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 1.0.17
GNU GnuTLS 1.0.16
GNU GnuTLS 1.0.15
GNU GnuTLS 1.0.14
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
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Avaya Interactive Response 2.0
Not Vulnerable: GNU GnuTLS 1.4.3

Discussion

GNUTLS PKCS RSA Signature Forgery Vulnerability

GnuTLS is prone to a vulnerability that may allow an attacker to forge an RSA signature. The attacker may be able to forge a PKCS #1 v1.5 signature when verifying a X.509 certificate.

An attacker may exploit this issue to sign digital certificates or RSA keys and take advantage of trust relationships that depend on these credentials, possibly posing as a trusted party and signing a certificate or key.

This vulnerability is a variant of the issue discussed in BID 19849 (OpenSSL PKCS Padding RSA Signature Forgery Vulnerability) and affects GnuTLS versions prior to version 1.4.3.

Exploit / POC

GNUTLS PKCS RSA Signature Forgery Vulnerability

Currently we are not aware of any exploits for this issue. 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 PKCS RSA Signature Forgery Vulnerability

Solution:
The vendor has addressed this issue in version 1.4.3 and later.

Please see the referenced advisories for more information.


GNU GnuTLS 1.0

GNU GnuTLS 1.0.1

GNU GnuTLS 1.0.14

GNU GnuTLS 1.0.15

GNU GnuTLS 1.0.16

GNU GnuTLS 1.0.17

GNU GnuTLS 1.0.2

GNU GnuTLS 1.0.3

GNU GnuTLS 1.0.4

GNU GnuTLS 1.0.6

GNU GnuTLS 1.0.7

GNU GnuTLS 1.0.8

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 1.2.4

GNU GnuTLS 1.2.5

GNU GnuTLS 1.2.9

GNU GnuTLS 1.3

GNU GnuTLS 1.3.1

GNU GnuTLS 1.3.3

GNU GnuTLS 1.3.4

GNU GnuTLS 1.4

GNU GnuTLS 1.4.2

References

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