OpenSSH UseLogin Vulnerability

BID:1334

Info

OpenSSH UseLogin Vulnerability

Bugtraq ID: 1334
Class: Design Error
CVE:
Remote: No
Local: Yes
Published: Jun 08 2000 12:00AM
Updated: Jun 08 2000 12:00AM
Credit: First posted to Bugtraq by Markus Friedl <[email protected]> on June 9, 2000.
Vulnerable: OpenBSD OpenSSH 2.1
OpenBSD OpenSSH 1.2.3
+ Debian Linux 2.2 sparc
+ Debian Linux 2.2 powerpc
+ Debian Linux 2.2 arm
+ Debian Linux 2.2 alpha
+ Debian Linux 2.2 68k
+ Debian Linux 2.2
OpenBSD OpenSSH 1.2
Not Vulnerable: OpenBSD OpenSSH 2.1.1

Exploit / POC

Solution / Fix

OpenSSH UseLogin Vulnerability

Solution:
OpenSSH 2.1.1 is fixed and is not vulnerable to this attack. It can be obtained at:

http://www.openssh.com/ftp.html

The following software distributions have released their respective patched packages at the locations below:

RedHat Linux:

ftp://ftp.redhat.de/pub/rh-addons/security/current

Connectiva Linux:

DIRECT DOWNLOAD LINKS TO UPDATED PACKAGES
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssh-2.1.1p1-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssh-askpass-2.1.1p1-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssh-askpass-gnome-2.1.1p1-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssh-clients-2.1.1p1-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssh-server-2.1.1p1-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssl-0.9.5a-1cl.i386.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/i386/openssl-devel-0.9.5a-1cl.i386.rpm

DIRECT LINK TO THE SOURCE PACKAGE
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/SRPMS/openssh-2.1.1p1-1cl.src.rpm
ftp://ftp.conectiva.com.br/pub/conectiva/atualizacoes/5.0/SRPMS/openssl-0.9.5a-1cl.src.rpm

FreeBSD:
Versions of FreeBSD 4 and 5, released after June 11, 2000 contain a version of OpenSSH that is not vulnerable to this problem. For those users who do not want to download and install the latest version of OpenSSH, a patch has been made available.

References

OpenSSH UseLogin Vulnerability

References:
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