OpenSSH GSSAPI Credential Disclosure Vulnerability

BID:14729

Info

OpenSSH GSSAPI Credential Disclosure Vulnerability

Bugtraq ID: 14729
Class: Design Error
CVE: CVE-2005-2798
Remote: Yes
Local: No
Published: Sep 01 2005 12:00AM
Updated: Mar 15 2007 03:34AM
Credit: Paul Moore disclosed this issue to the vendor.
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
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
SuSE Linux Enterprise Server 9
SCO Unixware 7.1.4
SCO Unixware 7.1.3
SCO Open Server 6.0
S.u.S.E. Linux Professional 10.0 OSS
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 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
Redhat Fedora Core4
Redhat Fedora Core3
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux AS 4
Redhat Desktop 4.0
OpenSSH OpenSSH 4.1
OpenSSH OpenSSH 4.0 p1
OpenSSH OpenSSH 4.0
OpenSSH OpenSSH 3.9 p1
+ S.u.S.E. Linux Personal 9.2 x86_64
 + S.u.S.E. Linux Personal 9.2
OpenSSH OpenSSH 3.8.1 p1
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 OpenSSH OpenSSH 3.8 p1
+ S.u.S.E. Linux Personal 9.1 x86_64
 + S.u.S.E. Linux Personal 9.1
OpenSSH OpenSSH 3.7.1 p1
+ SCO Open Server 5.0.7
OpenSSH OpenSSH 3.7.1
OpenSSH OpenSSH 3.7 p1
OpenSSH OpenSSH 3.7 .1p2
OpenSSH OpenSSH 3.7
OpenSSH OpenSSH 3.6.1 p2
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ MandrakeSoft Multi Network Firewall 2.0
+ Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Trustix Secure Linux 2.0
OpenSSH OpenSSH 3.6.1 p1
+ OpenPKG OpenPKG Current
 + Slackware Linux 9.0
+ Slackware Linux -current
 OpenSSH OpenSSH 3.6.1
+ Novell Netware 6.5
OpenSSH OpenSSH 3.5 p1
+ OpenPKG OpenPKG 1.2
+ Redhat Linux 9.0 i386
 + S.u.S.E. Linux Personal 8.2
+ Terra Soft Solutions Yellow Dog Linux 3.0
OpenSSH OpenSSH 3.5
OpenSSH OpenSSH 3.4 p1-1
OpenSSH OpenSSH 3.4 p1
+ Conectiva Linux Enterprise Edition 1.0
+ 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
 + FreeBSD FreeBSD 5.0
+ FreeBSD FreeBSD 4.7 -RELEASE
 + FreeBSD FreeBSD 4.7
+ IBM AIX 5.1 L
 + IBM AIX 4.3.3
+ Immunix Immunix OS 7+
 + Redhat Linux 8.0
+ Slackware Linux 8.1
+ SuSE Linux 8.1
+ SuSE Linux 8.0
OpenSSH OpenSSH 3.4
OpenSSH OpenSSH 3.3 p1
OpenSSH OpenSSH 3.3
+ Openwall Openwall GNU/*/Linux (Owl)-current
 OpenSSH OpenSSH 3.2.3 p1
OpenSSH OpenSSH 3.2.2 p1
+ Apple Mac OS X 10.1.5
+ Apple Mac OS X 10.1.4
+ Apple Mac OS X 10.1.3
+ Apple Mac OS X 10.1.2
+ Apple Mac OS X 10.1.1
+ Apple Mac OS X 10.1
+ Apple Mac OS X 10.1
+ Apple Mac OS X 10.0.4
+ Apple Mac OS X 10.0.3
+ Apple Mac OS X 10.0.2
+ Apple Mac OS X 10.0.1
+ Apple Mac OS X 10.0
OpenSSH OpenSSH 3.2
+ OpenBSD OpenBSD 3.1
 OpenSSH OpenSSH 3.1 p1
+ Juniper NetScreen-IDP 10 3.0 r2
 + Juniper NetScreen-IDP 10 3.0 r1
 + Juniper NetScreen-IDP 10 3.0
+ Juniper NetScreen-IDP 100 3.0 r2
 + Juniper NetScreen-IDP 100 3.0 r1
 + Juniper NetScreen-IDP 100 3.0
+ Juniper NetScreen-IDP 1000 3.0 r2
 + Juniper NetScreen-IDP 1000 3.0 r1
 + Juniper NetScreen-IDP 1000 3.0
+ Juniper NetScreen-IDP 500 3.0 r2
 + Juniper NetScreen-IDP 500 3.0 r1
 + Juniper NetScreen-IDP 500 3.0
+ Redhat Enterprise Linux AS 2.1 IA64
 + Redhat Enterprise Linux AS 2.1
 + Redhat Enterprise Linux ES 2.1 IA64
 + Redhat Enterprise Linux ES 2.1
 + Redhat Enterprise Linux WS 2.1 IA64
 + Redhat Enterprise Linux WS 2.1
 + Redhat Linux 7.3
+ Redhat Linux 7.2
+ Redhat Linux 7.1
+ Redhat Linux for iSeries 7.1
+ Redhat Linux for pSeries 7.1
+ Slackware Linux 8.1
+ Sun Linux 5.0.7
+ Sun Solaris 9
 + Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
OpenSSH OpenSSH 3.1
OpenSSH OpenSSH 3.0.2 p1
+ Guardian Digital Engarde Secure Linux 1.0.1
+ HP VirtualVault 4.6
OpenSSH OpenSSH 3.0.2
- Debian Linux 3.0
+ FreeBSD FreeBSD 4.5 -STABLEpre2002-03-07
 + FreeBSD FreeBSD 4.5 -RELEASE
 + OpenPKG OpenPKG 1.0
+ Openwall Openwall GNU/*/Linux 0.1 -stable
 + SuSE Linux 8.0
OpenSSH OpenSSH 3.0.1 p1
OpenSSH OpenSSH 3.0.1
OpenSSH OpenSSH 3.0 p1
OpenSSH OpenSSH 3.0
OpenSSH OpenSSH 2.9.9
+ NetBSD NetBSD 1.5.2
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.2
OpenSSH OpenSSH 2.9 p2
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ FreeBSD FreeBSD 4.4 -RELENG
 + HP Secure OS software for Linux 1.0
+ Immunix Immunix OS 7.0
+ MandrakeSoft Corporate Server 1.0.1
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Redhat Linux 7.2
+ Redhat Linux 7.1
+ Redhat Linux 7.0
+ Sun Cobalt RaQ 550
- SuSE Linux 7.3 sparc
 - SuSE Linux 7.3 ppc
 - SuSE Linux 7.3 i386
 - SuSE Linux 7.2 i386
 - SuSE Linux 7.1 x86
 - SuSE Linux 7.1 sparc
 - SuSE Linux 7.1 ppc
 - SuSE Linux 7.1 alpha
 OpenSSH OpenSSH 2.9 p1
- IBM AIX 4.3.3
- IBM AIX 4.3.2
- IBM AIX 4.3.1
- IBM AIX 4.3
OpenSSH OpenSSH 2.9
+ FreeBSD FreeBSD 4.6 -RELEASE
 + FreeBSD FreeBSD 4.6
+ FreeBSD FreeBSD 4.5 -RELEASE
 + FreeBSD FreeBSD 4.5
OpenSSH OpenSSH 2.5.2
- Caldera OpenUnix 8.0
- Caldera UnixWare 7.1.1
- Wirex Immunix OS 6.2
OpenSSH OpenSSH 2.5.1
+ NetBSD NetBSD 1.5.1
+ S.u.S.E. Linux Database Server 0
 + S.u.S.E. Linux Firewall on CD
+ S.u.S.E. SuSE eMail Server III
- SCO Open Server 5.0.6 a
 - SCO Open Server 5.0.6
- SCO Open Server 5.0.5
- SCO Open Server 5.0.4
- SCO Open Server 5.0.3
- SCO Open Server 5.0.2
- SCO Open Server 5.0.1
- SCO Open Server 5.0
+ SuSE Linux 7.3
+ SuSE Linux 7.2
+ SuSE Linux 7.1
+ SuSE SUSE Linux Enterprise Server 7
 OpenSSH OpenSSH 2.5
OpenSSH OpenSSH 2.3
- SuSE Linux 7.0 sparc
 - SuSE Linux 7.0 ppc
 - SuSE Linux 7.0 i386
 - SuSE Linux 7.0 alpha
 - SuSE Linux 6.4 ppc
 - SuSE Linux 6.4 i386
 - SuSE Linux 6.4 alpha
 OpenSSH OpenSSH 2.2 .0p1
OpenSSH OpenSSH 2.2
+ NetBSD NetBSD 1.5
OpenSSH OpenSSH 2.1.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 OpenSSH OpenSSH 2.1
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
HP HP-UX 11.23
HP HP-UX 11.11
HP HP-UX 11.0
HP HP-UX B.11.23
HP HP-UX B.11.11
HP HP-UX B.11.11
HP HP-UX B.11.00
Avaya Predictive Dialing System (PDS) 12.0
Avaya Messaging Storage Server MM3.0
Avaya Intuity Audix R5 0
Avaya Integrated Management
Avaya CVLAN
Not Vulnerable: OpenSSH OpenSSH 4.2

Discussion

OpenSSH GSSAPI Credential Disclosure Vulnerability

OpenSSH is susceptible to a GSSAPI credential-delegation vulnerability.

Specifically, if a user has GSSAPI authentication configured, and 'GSSAPIDelegateCredentials' is enabled, their Kerberos credentials will be forwarded to remote hosts. This occurs even when the user employs authentication methods other than GSSAPI to connect, which is not usually expected.

This vulnerability allows remote attackers to improperly gain access to GSSAPI credentials, allowing them to use those credentials to access resources granted to the original principal.

This issue affects versions of OpenSSH prior to 4.2.

Exploit / POC

OpenSSH GSSAPI Credential Disclosure Vulnerability

An exploit is not required.

Solution / Fix

OpenSSH GSSAPI Credential Disclosure Vulnerability

Solution:
Please see the referenced advisories for more information.

The vendor has released version 4.2 of OpenSSH to address this issue.


HP HP-UX 11.0

HP HP-UX 11.11

HP HP-UX 11.23

OpenSSH OpenSSH 2.1

OpenSSH OpenSSH 2.1.1

OpenSSH OpenSSH 2.2

OpenSSH OpenSSH 2.2 .0p1

OpenSSH OpenSSH 2.3

OpenSSH OpenSSH 2.5

OpenSSH OpenSSH 2.5.1

OpenSSH OpenSSH 2.5.2

OpenSSH OpenSSH 2.9 p2

OpenSSH OpenSSH 2.9 p1

OpenSSH OpenSSH 2.9

OpenSSH OpenSSH 2.9.9

OpenSSH OpenSSH 3.0

OpenSSH OpenSSH 3.0 p1

OpenSSH OpenSSH 3.0.1

OpenSSH OpenSSH 3.0.1 p1

OpenSSH OpenSSH 3.0.2

OpenSSH OpenSSH 3.0.2 p1

OpenSSH OpenSSH 3.1

OpenSSH OpenSSH 3.1 p1

OpenSSH OpenSSH 3.2

OpenSSH OpenSSH 3.2.2 p1

OpenSSH OpenSSH 3.2.3 p1

OpenSSH OpenSSH 3.3

OpenSSH OpenSSH 3.3 p1

OpenSSH OpenSSH 3.4 p1

OpenSSH OpenSSH 3.4 p1-1

OpenSSH OpenSSH 3.4

OpenSSH OpenSSH 3.5

OpenSSH OpenSSH 3.5 p1

OpenSSH OpenSSH 3.6.1 p1

OpenSSH OpenSSH 3.6.1

OpenSSH OpenSSH 3.6.1 p2

OpenSSH OpenSSH 3.7 p1

OpenSSH OpenSSH 3.7

OpenSSH OpenSSH 3.7 .1p2

OpenSSH OpenSSH 3.7.1 p1

OpenSSH OpenSSH 3.7.1

OpenSSH OpenSSH 3.8 p1

OpenSSH OpenSSH 3.8.1 p1

OpenSSH OpenSSH 3.9 p1

OpenSSH OpenSSH 4.0 p1

OpenSSH OpenSSH 4.0

OpenSSH OpenSSH 4.1

SCO Open Server 6.0

SCO Unixware 7.1.3

SCO Unixware 7.1.4

References

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