OpenSSH PAM Conversation Memory Scrubbing Weakness

Bugtraq ID:	9040
Class:	Design Error
CVE:
Remote:	No
Local:	Yes
Published:	Nov 13 2003 12:00AM
Updated:	Nov 13 2003 12:00AM
Credit:	Discovery credited to Markus Kuhn.
Vulnerable:	OpenSSH OpenSSH 3.7.1 p1 + SCO Open Server 5.0.7 OpenSSH OpenSSH 3.7 p1 OpenSSH OpenSSH 3.7 .1p2 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 3.5 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 3.4 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 3.3 p1 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 3.1 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 3.0.2 p1 + Guardian Digital Engarde Secure Linux 1.0.1 + HP VirtualVault 4.6 OpenSSH OpenSSH 3.0.1 p1 OpenSSH OpenSSH 3.0 p1
Not Vulnerable:

OpenSSH PAM Conversation Memory Scrubbing Weakness

A problem in the handling of PAM modules has been reported in OpenSSH. Because of this, OpenSSH may not correctly handle aborted conversations with PAM modules with the consequence that memory may not be scrubbed of sensitive information such as credentials. This could also expose other vulnerabilities in PAM modules due to unpredictable behavior.

OpenSSH PAM Conversation Memory Scrubbing Weakness

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

OpenSSH PAM Conversation Memory Scrubbing Weakness

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

OpenSSH PAM Conversation Memory Scrubbing Weakness

References:

• Bugzilla Bug 632 (Markus Kuhn)
  
• Minor OpenSSH/pam vuln (non-exploitable) ()