MIT Kerberos 5 KRB5_Recvauth Remote Pre-Authentication Double-Free Vulnerability

BID:14239

Info

MIT Kerberos 5 KRB5_Recvauth Remote Pre-Authentication Double-Free Vulnerability

Bugtraq ID: 14239
Class: Design Error
CVE: CVE-2005-1689
Remote: Yes
Local: No
Published: Jul 12 2005 12:00AM
Updated: Sep 26 2006 03:51PM
Credit: Discovery of this issue is credited to Magnus Hagander.
Vulnerable: Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
Turbolinux Turbolinux Server 10.0
Turbolinux Turbolinux Server 8.0
Turbolinux Turbolinux Desktop 10.0
Turbolinux Home
Turbolinux Appliance Server 1.0 Workgroup Edition
Turbolinux Appliance Server 1.0 Hosting Edition
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
Sun Solaris 9_x86 Update 2
Sun Solaris 9_x86
Sun Solaris 9
Sun Solaris 8_x86
Sun Solaris 8_sparc
Sun Solaris 10.0_x86
Sun Solaris 10
Sun SEAM 1.0
SGI ProPack 3.0 SP6
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
Redhat Fedora Core4
Redhat Fedora Core3
Redhat Enterprise Linux WS 3
Redhat Enterprise Linux WS 2.1 IA64
Redhat Enterprise Linux WS 2.1
Redhat Enterprise Linux ES 3
Redhat Enterprise Linux ES 2.1 IA64
Redhat Enterprise Linux ES 2.1
Redhat Enterprise Linux AS 3
Redhat Enterprise Linux AS 2.1 IA64
Redhat Enterprise Linux AS 2.1
Redhat Desktop 3.0
Redhat Advanced Workstation for the Itanium Processor 2.1 IA64
Redhat Advanced Workstation for the Itanium Processor 2.1
MIT Kerberos 5 5.0 -1.4.1
MIT Kerberos 5 5.0 -1.4
MIT Kerberos 5 5.0 -1.3.6
MIT Kerberos 5 5.0 -1.3.5
MIT Kerberos 5 5.0 -1.3.4
+ Redhat Desktop 4.0
+ Redhat Enterprise Linux AS 4
 + Redhat Enterprise Linux ES 4
 + Redhat Enterprise Linux WS 4
 MIT Kerberos 5 5.0 -1.3.3
MIT Kerberos 5 5.0 -1.2beta2
MIT Kerberos 5 5.0 -1.2beta1
MIT Kerberos 5 5.0 -1.1.1
MIT Kerberos 5 5.0 -1.1
MIT Kerberos 5 5.0 -1.0.x
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
Mandriva Linux Mandrake 10.1 x86_64
Mandriva Linux Mandrake 10.1
Mandriva Linux Mandrake 10.0 AMD64
Mandriva Linux Mandrake 10.0
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
MandrakeSoft Corporate Server 2.1 x86_64
MandrakeSoft Corporate Server 2.1
HP HP-UX B.11.23
HP HP-UX B.11.11
HP HP-UX B.11.00
Gentoo Linux
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
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
Apple Mac OS X Server 10.4.2
Apple Mac OS X 10.4.2
Not Vulnerable:

Discussion

MIT Kerberos 5 KRB5_Recvauth Remote Pre-Authentication Double-Free Vulnerability

MIT Kerberos 5 is prone to a remote double-free vulnerability. Remote attackers can trigger this issue prior to any authentication whatsoever. The issue exists in the 'revcauth_common()' helper function.

Because of the code path taken in the vulnerable function, exploitation may be hindered. However, attackers may presumably leverage this issue to execute arbitrary code in the context of the affected service.

Note that successful exploitation of this issue on a Kerberos Key Distribution Center (KDC) computer may result in the compromise of an entire Kerberos realm.

Exploit / POC

MIT Kerberos 5 KRB5_Recvauth Remote Pre-Authentication Double-Free 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

MIT Kerberos 5 KRB5_Recvauth Remote Pre-Authentication Double-Free Vulnerability

Solution:
The vendor has released patches to address this issue.

Please see the referenced advisories for more information.


Sun Solaris 8_sparc

Sun Solaris 10

Sun Solaris 10.0_x86

Sun Solaris 9

Sun Solaris 9_x86

Sun Solaris 8_x86

Apple Mac OS X 10.4.2

MIT Kerberos 5 5.0 -1.4.1

References

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