Apache htpasswd Password Entropy Weakness

BID:8707

Info

Apache htpasswd Password Entropy Weakness

Bugtraq ID: 8707
Class: Design Error
CVE:
Remote: Yes
Local: Yes
Published: Sep 25 2003 12:00AM
Updated: Feb 15 2008 11:45PM
Credit: The discovery of this weakness has been credited to Andreas Steinmetz <[email protected]>.
Vulnerable: Posadis Posadis 1.3.31
Apache Apache 2.2.6
Apache Apache 2.2.5
Apache Apache 2.2.4
Apache Apache 2.2.3
Apache Apache 2.2.2
Apache Apache 2.2
Apache Apache 2.1.8
Apache Apache 2.1.7
Apache Apache 2.1.6
Apache Apache 2.1.5
Apache Apache 2.1.4
Apache Apache 2.1.3
Apache Apache 2.1.2
Apache Apache 2.1.1
Apache Apache 2.1
Apache Apache 2.0.59
Apache Apache 2.0.58
+ 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
Apache Apache 2.0.56 -dev
Apache Apache 2.0.55
Apache Apache 2.0.54
+ 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
Apache Apache 2.0.53
Apache Apache 2.0.52
+ Apple Mac OS X 10.3.6
+ Apple Mac OS X 10.2.8
+ Apple Mac OS X Server 10.3.6
+ Apple Mac OS X Server 10.2.8
+ Redhat Desktop 4.0
+ Redhat Enterprise Linux AS 4
 + Redhat Enterprise Linux ES 4
 + Redhat Enterprise Linux WS 4
 + Sun Solaris 10
 Apache Apache 2.0.51
+ Redhat Fedora Core2
 + Redhat Fedora Core1
 Apache Apache 2.0.50
+ Mandriva Linux Mandrake 10.1 x86_64
 + Mandriva Linux Mandrake 10.1
Apache Apache 2.0.49
+ S.u.S.E. Linux Personal 9.1
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Apache Apache 2.0.48
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
+ S.u.S.E. Linux Personal 9.0 x86_64
 + S.u.S.E. Linux Personal 9.0
+ S.u.S.E. Linux Personal 8.2
+ SuSE Linux 8.1
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Apache Apache 2.0.47
+ Apple Mac OS X Server 10.3.5
+ Apple Mac OS X Server 10.3.4
+ Apple Mac OS X Server 10.3.3
+ Apple Mac OS X Server 10.3.2
+ Apple Mac OS X Server 10.3.1
+ Apple Mac OS X Server 10.3
+ Apple Mac OS X Server 10.2.8
+ Apple Mac OS X Server 10.2.7
+ Apple Mac OS X Server 10.2.6
+ Apple Mac OS X Server 10.2.5
+ Apple Mac OS X Server 10.2.4
+ Apple Mac OS X Server 10.2.3
+ Apple Mac OS X Server 10.2.2
+ Apple Mac OS X Server 10.2.1
+ Apple Mac OS X Server 10.2
+ Apple Mac OS X Server 10.1.5
+ Apple Mac OS X Server 10.1.4
+ Apple Mac OS X Server 10.1.3
+ Apple Mac OS X Server 10.1.2
+ Apple Mac OS X Server 10.1.1
+ Apple Mac OS X Server 10.1
+ Mandriva Linux Mandrake 9.2 amd64
 + Mandriva Linux Mandrake 9.2
+ Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
Apache Apache 2.0.46
+ Redhat Desktop 3.0
+ Redhat Enterprise Linux AS 3
 + Redhat Enterprise Linux ES 3
 + Redhat Enterprise Linux WS 3
 + Trustix Secure Linux 2.0
Apache Apache 2.0.45
- Apple Mac OS X 10.2.6
- Apple Mac OS X 10.2.5
- Apple Mac OS X 10.2.4
- Apple Mac OS X 10.2.3
- Apple Mac OS X 10.2.2
- Apple Mac OS X 10.2.1
- Apple Mac OS X 10.2
- 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
Apache Apache 2.0.44
Apache Apache 2.0.43
Apache Apache 2.0.42
+ Gentoo Linux 1.4 _rc1
 + Gentoo Linux 1.2
Apache Apache 2.0.41
Apache Apache 2.0.40
+ Redhat Linux 9.0 i386
 + Redhat Linux 8.0
+ Terra Soft Solutions Yellow Dog Linux 3.0
Apache Apache 2.0.39
Apache Apache 2.0.38
Apache Apache 2.0.37
Apache Apache 2.0.36
Apache Apache 2.0.35
Apache Apache 2.0.32
Apache Apache 2.0.28 Beta
Apache Apache 2.0.28
Apache Apache 2.0 a9
Apache Apache 2.0
Apache Apache 1.3.39
Apache Apache 1.3.37
Apache Apache 1.3.36
Apache Apache 1.3.35 -dev
Apache Apache 1.3.35
Apache Apache 1.3.34
Apache Apache 1.3.33
+ Apple Mac OS X 10.3.6
+ Apple Mac OS X 10.2.8
+ Apple Mac OS X Server 10.3.6
+ Apple Mac OS X Server 10.2.8
+ 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
Apache Apache 1.3.32
+ Gentoo Linux 1.4
+ Gentoo Linux
Apache Apache 1.3.31
+ OpenPKG OpenPKG Current
 Apache Apache 1.3.29
+ Apple Mac OS X 10.3.5
+ Apple Mac OS X 10.2.7
+ Apple Mac OS X Server 10.3.5
+ Apple Mac OS X Server 10.2.7
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
+ OpenPKG OpenPKG 2.0
Apache Apache 1.3.28
+ Mandriva Linux Mandrake 9.2 amd64
 + Mandriva Linux Mandrake 9.2
+ OpenBSD OpenBSD 3.4
 + OpenPKG OpenPKG 1.3
Apache Apache 1.3.27
+ HP HP-UX (VVOS) 11.0 4
 + HP VirtualVault 4.6
+ HP VirtualVault 4.5
+ HP Webproxy 2.0
+ Immunix Immunix OS 7+
 + Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ OpenBSD OpenBSD 3.3
 + OpenPKG OpenPKG Current
 + 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 Advanced Work Station 2.1
+ SGI IRIX 6.5.19
Apache Apache 1.3.9
+ 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
+ NetScreen NetScreen-Global PRO Express Policy Manager Server
+ NetScreen NetScreen-Global PRO Policy Manager Server
+ Sun Solaris 8_x86
 + Sun Solaris 8_sparc
 + Sun SunOS 5.8 _x86
 + Sun SunOS 5.8
Apache Apache 1.3.7 -dev
Apache Apache 1.3.6
+ Sun Cobalt ManageRaQ3 3000R-mr
+ Sun Cobalt RaQ3 3000R
+ Sun Cobalt Velociraptor
Apache Apache 1.3.4
+ BSDI BSD/OS 4.0
Apache Apache 1.3.3
+ Redhat Linux 5.2 sparc
 + Redhat Linux 5.2 i386
 + Redhat Linux 5.2 alpha
 Apache Apache 2.3.38-dev
Apache Apache 2.2.7-dev
Apache Apache 2.2.6-dev
Apache Apache 2.2.5-dev
Apache Apache 2.0.62-dev
Apache Apache 2.0.61-dev
Apache Apache 2.0.60-dev
Apache Apache 1.3.40-dev
Not Vulnerable:

Discussion

Apache htpasswd Password Entropy Weakness

A weakness has been discovered in the way that the Apache 'htpasswd' utility generates salts. Specifically, the salt is generated based of the current system time. As a result, salts generated within the same second will be identical. This may pose a security weakness if the server were implementing default passwords and an attacker were capable of obtaining the contents of htpasswd.

Exploit / POC

Apache htpasswd Password Entropy Weakness

No exploit required.

References

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