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Title: Apache Mod_Access Access Control Rule Bypass Vulnerability

Severity: HIGH

Description:

mod_access is an Apache module designed to provide access control.

Apache mod_access has been reported to be prone to an access rule bypass vulnerability. The issue is reported to occur only when the affected service is run on big-endian 64-bit platforms.

When an Allow or Deny rule is specified and an IP address is used in the rule without a corresponding netmask, the affected module may fail to match the rule. As a result of this vulnerability, access controls may not be enforced correctly. This could lead a system administrator into a false sense of security where it is believed that the server is not exposed to malicious traffic.

A remote attacker may exploit this issue to bypass access controls on the affected server.

Affected Products:

• Apache Software Foundation Apache 1.3.0
• Apache Software Foundation Apache 1.3.1
• Apache Software Foundation Apache 1.3.11
• Apache Software Foundation Apache 1.3.12
• Apache Software Foundation Apache 1.3.14
• Apache Software Foundation Apache 1.3.17
• Apache Software Foundation Apache 1.3.18
• Apache Software Foundation Apache 1.3.19
• Apache Software Foundation Apache 1.3.20
• Apache Software Foundation Apache 1.3.22
• Apache Software Foundation Apache 1.3.23
• Apache Software Foundation Apache 1.3.24
• Apache Software Foundation Apache 1.3.25
• Apache Software Foundation Apache 1.3.26
• Apache Software Foundation Apache 1.3.27
• Apache Software Foundation Apache 1.3.28
• Apache Software Foundation Apache 1.3.29
• Apache Software Foundation Apache 1.3.3
• Apache Software Foundation Apache 1.3.4
• Apache Software Foundation Apache 1.3.6
• Apache Software Foundation Apache 1.3.7 -dev
• Apache Software Foundation Apache 1.3.9
• Apple Mac OS X 10.1.0
• Apple Mac OS X 10.1.1
• Apple Mac OS X 10.1.2
• Apple Mac OS X 10.1.3
• Apple Mac OS X 10.1.4
• Apple Mac OS X 10.1.5
• Apple Mac OS X 10.2.0
• Apple Mac OS X 10.2.1
• Apple Mac OS X 10.2.2
• Apple Mac OS X 10.2.3
• Apple Mac OS X 10.2.4
• Apple Mac OS X 10.2.5
• Apple Mac OS X 10.2.6
• Apple Mac OS X 10.2.7
• Apple Mac OS X 10.2.8
• Apple Mac OS X 10.3.0
• Apple Mac OS X 10.3.1
• Apple Mac OS X 10.3.2
• Apple Mac OS X 10.3.5
• Apple Mac OS X Server 10.1.0
• Apple Mac OS X Server 10.1.1
• Apple Mac OS X Server 10.1.2
• Apple Mac OS X Server 10.1.3
• Apple Mac OS X Server 10.1.4
• Apple Mac OS X Server 10.1.5
• Apple Mac OS X Server 10.2.0
• Apple Mac OS X Server 10.2.1
• Apple Mac OS X Server 10.2.2
• Apple Mac OS X Server 10.2.3
• Apple Mac OS X Server 10.2.4
• Apple Mac OS X Server 10.2.5
• Apple Mac OS X Server 10.2.6
• Apple Mac OS X Server 10.2.7
• Apple Mac OS X Server 10.2.8
• Apple Mac OS X Server 10.3.0
• Apple Mac OS X Server 10.3.1
• Apple Mac OS X Server 10.3.2
• Apple Mac OS X Server 10.3.5
• BSDI BSD/OS 4.0.0
• Caldera OpenLinux Server 3.1.0
• Caldera OpenLinux Server 3.1.1
• Caldera OpenLinux Workstation 3.1.0
• Caldera OpenLinux Workstation 3.1.1
• Conectiva Linux 6.0.0
• Conectiva Linux 7.0.0
• Conectiva Linux 8.0.0
• Debian Linux 2.2.0
• Debian Linux 2.2.0 68k
• Debian Linux 2.2.0 alpha
• Debian Linux 2.2.0 arm
• Debian Linux 2.2.0 powerpc
• Debian Linux 2.2.0 sparc
• Debian Linux 2.3.0
• Debian Linux 3.0.0 alpha
• Debian Linux 3.0.0 arm
• Debian Linux 3.0.0 hppa
• Debian Linux 3.0.0 ia-32
• Debian Linux 3.0.0 ia-64
• Debian Linux 3.0.0 m68k
• Debian Linux 3.0.0 mips
• Debian Linux 3.0.0 mipsel
• Debian Linux 3.0.0 ppc
• Debian Linux 3.0.0 s/390
• Debian Linux 3.0.0 sparc
• EnGarde Secure Linux 1.0.1
• HP HP-UX (VVOS) 11.0.0 4
• HP HP-UX B.11.04
• HP Secure OS software for Linux 1.0.0
• HP VirtualVault 4.5.0
• HP VirtualVault 4.6.0
• HP VirtualVault A.04.50
• HP VirtualVault A.04.60
• HP VirtualVault A.04.70
• HP Webproxy 2.0.0
• HP Webproxy A.02.00
• HP Webproxy A.02.10
• IBM HTTP Server 1.3.19
• Immunix Immunix OS 7+
• MandrakeSoft Corporate Server 1.0.1
• MandrakeSoft Corporate Server 2.1.0
• MandrakeSoft Corporate Server 2.1.0 x86_64
• MandrakeSoft Linux Mandrake 10.0.0
• MandrakeSoft Linux Mandrake 10.0.0 amd64
• MandrakeSoft Linux Mandrake 7.1.0
• MandrakeSoft Linux Mandrake 7.2.0
• MandrakeSoft Linux Mandrake 8.0.0
• MandrakeSoft Linux Mandrake 8.0.0 ppc
• MandrakeSoft Linux Mandrake 8.1.0
• MandrakeSoft Linux Mandrake 8.1.0 ia64
• MandrakeSoft Linux Mandrake 8.2.0
• MandrakeSoft Linux Mandrake 8.2.0 ppc
• MandrakeSoft Linux Mandrake 9.0.0
• MandrakeSoft Linux Mandrake 9.1.0
• MandrakeSoft Linux Mandrake 9.1.0 ppc
• MandrakeSoft Linux Mandrake 9.2.0
• MandrakeSoft Linux Mandrake 9.2.0 amd64
• MandrakeSoft Single Network Firewall 7.2.0
• Netscreen NetScreen-Global PRO Express Policy Manager Server
• Netscreen NetScreen-Global PRO Policy Manager Server
• OpenBSD OpenBSD 2.8.0
• OpenBSD OpenBSD 2.9.0
• OpenBSD OpenBSD 3.0
• OpenBSD OpenBSD 3.1
• OpenBSD OpenBSD 3.3
• OpenBSD OpenBSD 3.4
• OpenPKG OpenPKG 1.0.0
• OpenPKG OpenPKG 1.1.0
• OpenPKG OpenPKG 1.3.0
• OpenPKG OpenPKG 2.0.0
• OpenPKG OpenPKG Current
• Oracle HTTP Server for Server 8.1.7
• Oracle HTTP Server for Server 9.0.1
• Oracle HTTP Server for Server 9.2
• Oracle Oracle HTTP Server 1.0.2 .0
• Oracle Oracle HTTP Server 1.0.2 .1
• Oracle Oracle HTTP Server 1.0.2 .2
• Oracle Oracle HTTP Server 1.0.2 .2 Roll up 2
• Oracle Oracle HTTP Server 8.1.7
• Oracle Oracle HTTP Server 9.0.1
• Oracle Oracle HTTP Server 9.0.2
• Oracle Oracle HTTP Server 9.0.2 .3
• Oracle Oracle HTTP Server 9.0.3 .1
• Oracle Oracle HTTP Server 9.1.0
• Oracle Oracle HTTP Server 9.2.0 .0
• Oracle Oracle HTTP Server for Apps only 1.0.2 .1s
• Oracle Oracle8 8.1.7
• Oracle Oracle8i Enterprise Edition 8.1.7 .0.0
• Oracle Oracle8i Standard Edition 8.1.7
• Oracle Oracle9i Application Server 1.0.2
• Oracle Oracle9i Application Server 1.0.2 .1s
• Oracle Oracle9i Application Server 1.0.2 .2
• Oracle Oracle9i Application Server 9.0.2
• Oracle Oracle9i Application Server 9.0.2 .3
• Oracle Oracle9i Application Server 9.0.3 .1
• Oracle Oracle9i Enterprise Edition 9.2.0 .0.3
• Oracle Oracle9i Personal Edition 9.2.0 .0.3
• Oracle Oracle9i Standard Edition 9.2.0 .0.3
• RedHat Enterprise Linux AS 2.1
• RedHat Enterprise Linux AS 2.1 IA64
• RedHat Enterprise Linux ES 2.1
• RedHat Enterprise Linux ES 2.1 IA64
• RedHat Enterprise Linux WS 2.1
• RedHat Enterprise Linux WS 2.1 IA64
• RedHat Linux 5.2.0 alpha
• RedHat Linux 5.2.0 i386
• RedHat Linux 5.2.0 sparc
• RedHat Linux 6.2.0 alpha
• RedHat Linux 6.2.0 i386
• RedHat Linux 6.2.0 sparc
• RedHat Linux 7.0.0 alpha
• RedHat Linux 7.0.0 i386
• RedHat Linux 7.1.0 alpha
• RedHat Linux 7.1.0 i386
• RedHat Linux 7.1.0 ia64
• RedHat Linux 7.2.0 i386
• RedHat Linux 7.2.0 ia64
• RedHat Linux 7.3.0
• RedHat Linux 7.3.0 i386
• RedHat Linux Advanced Work Station 2.1.0
• S.u.S.E. Linux 6.4.0
• S.u.S.E. Linux 6.4.0 alpha
• S.u.S.E. Linux 6.4.0 i386
• S.u.S.E. Linux 6.4.0 ppc
• S.u.S.E. Linux 7.0.0
• S.u.S.E. Linux 7.0.0 alpha
• S.u.S.E. Linux 7.0.0 i386
• S.u.S.E. Linux 7.0.0 ppc
• S.u.S.E. Linux 7.0.0 sparc
• S.u.S.E. Linux 7.1.0
• S.u.S.E. Linux 7.1.0 alpha
• S.u.S.E. Linux 7.1.0 ppc
• S.u.S.E. Linux 7.1.0 sparc
• S.u.S.E. Linux 7.1.0 x86
• S.u.S.E. Linux 7.2.0
• S.u.S.E. Linux 7.2.0 i386
• S.u.S.E. Linux 7.3.0
• S.u.S.E. Linux 7.3.0 i386
• S.u.S.E. Linux 7.3.0 ppc
• S.u.S.E. Linux 7.3.0 sparc
• S.u.S.E. Linux 8.0.0
• S.u.S.E. Linux 8.0.0 i386
• SGI IRIX 6.5.0
• SGI IRIX 6.5.1
• SGI IRIX 6.5.10
• SGI IRIX 6.5.11
• SGI IRIX 6.5.12
• SGI IRIX 6.5.12 f
• SGI IRIX 6.5.12 m
• SGI IRIX 6.5.13
• SGI IRIX 6.5.13 f
• SGI IRIX 6.5.13 m
• SGI IRIX 6.5.14
• SGI IRIX 6.5.14 f
• SGI IRIX 6.5.14 m
• SGI IRIX 6.5.15
• SGI IRIX 6.5.16
• SGI IRIX 6.5.17
• SGI IRIX 6.5.18
• SGI IRIX 6.5.19
• SGI IRIX 6.5.2
• SGI IRIX 6.5.3
• SGI IRIX 6.5.4
• SGI IRIX 6.5.5
• SGI IRIX 6.5.6
• SGI IRIX 6.5.7
• SGI IRIX 6.5.8
• SGI IRIX 6.5.9
• Slackware Linux 8.0.0
• Slackware Linux 8.1.0
• Sun Cobalt Control Station 4100CS
• Sun Cobalt ManageRaQ v2 3599BD
• Sun Cobalt ManageRaQ3 3000R-mr
• Sun Cobalt Qube3 4000WG
• Sun Cobalt RaQ 550
• Sun Cobalt RaQ XTR 3500R
• Sun Cobalt RaQ3 3000R
• Sun Cobalt RaQ4 3001R
• Sun Cobalt Velociraptor
• Sun Solaris 8
• Sun Solaris 8_x86
• Sun Solaris 9
• Sun Solaris 9_x86
• Sun Solaris 9_x86 Update 2
• Sun SunOS 5.8.0
• Sun SunOS 5.8.0 _x86
• Sun SunOS 5.9.0
• Sun SunOS 5.9.0 _x86
• Trustix Secure Linux 1.1.0
• Trustix Secure Linux 1.2.0
• Trustix Secure Linux 1.5.0
• Unisphere Networks SDX-300 2.0.3

References:

• Apache Software Foundation: Apache Homepage
• ApacheWeek: Overview of security vulnerabilities in Apache httpd 2.0
• Oracle: Critical Patch Update - July 2005
• Sun: Sun Alert ID: 57628

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