ProFTPD AUTH Multiple Authentication Module Security Bypass Vulnerability

BID:23546

Info

ProFTPD AUTH Multiple Authentication Module Security Bypass Vulnerability

Bugtraq ID: 23546
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: Apr 18 2007 12:00AM
Updated: Nov 15 2007 12:37AM
Credit: Evgeni Golov is credited with the discovery of this vulnerability.
Vulnerable: Redhat Fedora Core7
ProFTPD Project ProFTPD 1.3 rc3
ProFTPD Project ProFTPD 1.3 a
ProFTPD Project ProFTPD 1.3 .0rc2
ProFTPD Project ProFTPD 1.3 .0rc1
ProFTPD Project ProFTPD 1.3
ProFTPD Project ProFTPD 1.2.10
+ 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
ProFTPD Project ProFTPD 1.2.9 rc3
ProFTPD Project ProFTPD 1.2.9 rc2
ProFTPD Project ProFTPD 1.2.9 rc1
ProFTPD Project ProFTPD 1.2.9
+ Mandriva Linux Mandrake 10.0
+ OpenPKG OpenPKG 2.0
+ OpenPKG OpenPKG 1.3
+ OpenPKG OpenPKG Current
+ Slackware Linux 9.1
+ Slackware Linux 9.0
+ Slackware Linux 8.1
+ Slackware Linux -current
ProFTPD Project ProFTPD 1.2.8 rc2
ProFTPD Project ProFTPD 1.2.8 rc1
ProFTPD Project ProFTPD 1.2.8
+ Slackware Linux 9.0
+ Slackware Linux 8.1
+ Slackware Linux -current
ProFTPD Project ProFTPD 1.2.7 rc3
ProFTPD Project ProFTPD 1.2.7 rc2
ProFTPD Project ProFTPD 1.2.7 rc1
ProFTPD Project ProFTPD 1.2.7
+ Sun Cobalt Qube 3
ProFTPD Project ProFTPD 1.2.6
ProFTPD Project ProFTPD 1.2.5 rc1
ProFTPD Project ProFTPD 1.2.5
ProFTPD Project ProFTPD 1.2.4
+ 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
ProFTPD Project ProFTPD 1.2.3
ProFTPD Project ProFTPD 1.2.2 rc3
ProFTPD Project ProFTPD 1.2.2 rc1
ProFTPD Project ProFTPD 1.2.2
ProFTPD Project ProFTPD 1.2.1
ProFTPD Project ProFTPD 1.2 pre9
ProFTPD Project ProFTPD 1.2 pre8
ProFTPD Project ProFTPD 1.2 pre7
ProFTPD Project ProFTPD 1.2 pre6
ProFTPD Project ProFTPD 1.2 pre5
ProFTPD Project ProFTPD 1.2 pre4
ProFTPD Project ProFTPD 1.2 pre3
ProFTPD Project ProFTPD 1.2 pre2
ProFTPD Project ProFTPD 1.2 pre11
ProFTPD Project ProFTPD 1.2 pre10
ProFTPD Project ProFTPD 1.2 pre1
ProFTPD Project ProFTPD 1.2 .0rc3
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
+ Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
ProFTPD Project ProFTPD 1.2 .0rc2
ProFTPD Project ProFTPD 1.2 .0rc1
ProFTPD Project ProFTPD 1.2
+ Cobalt Qube 3.0
+ Cobalt Qube 2.0
+ Cobalt RaQ 3.0
+ Cobalt RaQ 2.0
+ Cobalt RaQ 1.1
Mandriva Linux Mandrake 2007.1 x86_64
Mandriva Linux Mandrake 2007.1
Mandriva Linux Mandrake 2007.0 x86_64
Mandriva Linux Mandrake 2007.0
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
MandrakeSoft Corporate Server 4.0
Not Vulnerable:

Discussion

ProFTPD AUTH Multiple Authentication Module Security Bypass Vulnerability

ProFTPD is reported prone to a security-restriction-bypass vulnerability because of an error in the AUTH API.

Attackers may exploit this issue to bypass security controls when multiple modules are configured with disparate authentication policies.

ProFTPD 1.2 and 1.3 branches are reported vulnerable; other versions may be affected as well.

NOTE: The latest version in the CVS repository reportedly addresses this issue.

Exploit / POC

ProFTPD AUTH Multiple Authentication Module Security Bypass 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: mailto:[email protected].

Solution / Fix

ProFTPD AUTH Multiple Authentication Module Security Bypass Vulnerability

Solution:
The vendor has addressed this vulnerability in the latest CVS versions. Please see the vendor references for details.

References

ProFTPD AUTH Multiple Authentication Module Security Bypass Vulnerability

References:
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