OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

BID:11781

Info

OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

Bugtraq ID: 11781
Class: Design Error
CVE: CVE-2003-0190
Remote: Yes
Local: No
Published: Nov 30 2004 12:00AM
Updated: May 08 2007 11:09PM
Credit: The original discovery of this vulnerability is credited to 'Marco Ivaldi <[email protected]>'.
Vulnerable: SuSE Linux Enterprise Server 9
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
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
Not Vulnerable:

Discussion

OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

The portable version of OpenSSH is reported prone to an information-disclosure vulnerability. The portable version is distributed for operating systems other than its native OpenBSD platform.

This issue is related to BID 7467. Reportedly, the previous fix for BID 7467 didn't completely fix the issue. This current issue may involve differing code paths in PAM, resulting in a new vulnerability, but this has not been confirmed.

Exploiting this vulnerability allows remote attackers to test for the presence of valid usernames. Knowledge of usernames may aid them in further attacks.

Exploit / POC

OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

The following proof-of-concept exploit is available:

Solution / Fix

OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

Solution:
Please see the references for more information and fixes.


OpenSSH OpenSSH 3.4 p1

References

OpenSSH-portable PAM Authentication Remote Information Disclosure Vulnerability

References:

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