Apache HTTP Server mod_access information disclosure

apache-modaccess-obtain-information (15422)

Medium Risk

Description:

Apache HTTP Server could allow a remote user to obtain sensitive information, caused by a vulnerability in the mod_access module. When IP addresses are specified without a subnet netmask, the server may not use the proper Allow/Deny rule. A remote user could gain unauthorized access to files and directories, while other users could be denied access when these rules fail.

Platforms Affected:

• Apache, HTTP Server 1.3
• Apache, HTTP Server 1.3.1
• Apache, HTTP Server 1.3.11
• Apache, HTTP Server 1.3.12
• Apache, HTTP Server 1.3.14
• Apache, HTTP Server 1.3.17
• Apache, HTTP Server 1.3.18
• Apache, HTTP Server 1.3.19
• Apache, HTTP Server 1.3.20
• Apache, HTTP Server 1.3.22
• Apache, HTTP Server 1.3.23
• Apache, HTTP Server 1.3.24
• Apache, HTTP Server 1.3.25
• Apache, HTTP Server 1.3.26
• Apache, HTTP Server 1.3.27
• Apache, HTTP Server 1.3.28
• Apache, HTTP Server 1.3.29
• Apache, HTTP Server 1.3.3
• Apache, HTTP Server 1.3.4
• Apache, HTTP Server 1.3.6
• Apache, HTTP Server 1.3.7
• Apache, HTTP Server 1.3.9
• Gentoo, Linux
• HP, HP-UX 11.04
• MandrakeSoft, Mandrake Linux 10.0
• MandrakeSoft, Mandrake Linux 10.0 AMD64
• MandrakeSoft, Mandrake Linux 9.1
• MandrakeSoft, Mandrake Linux 9.1 PPC
• MandrakeSoft, Mandrake Linux 9.2
• MandrakeSoft, Mandrake Linux 9.2 AMD64
• MandrakeSoft, Mandrake Linux Corporate Server 1.0.1
• MandrakeSoft, Mandrake Linux Corporate Server 2.1
• MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
• MandrakeSoft, Mandrake Multi Network Firewall 8.2
• Novell, UnitedLinux 1.0
• OpenBSD, OpenBSD 3.3
• OpenBSD, OpenBSD 3.4
• OpenPKG, OpenPKG 1.3
• OpenPKG, OpenPKG 2.0
• OpenPKG, OpenPKG CURRENT
• Slackware, Slackware Linux 8.1
• Slackware, Slackware Linux 9.0
• Slackware, Slackware Linux 9.1
• Slackware, Slackware Linux current
• Sun, Solaris 8
• Sun, Solaris 9
• SuSE, SuSE Linux 9.0
• SuSE, SuSE Linux Connectivity Server
• SuSE, SuSE Linux Database Server
• SuSE, SuSE Linux Desktop 1.0
• SuSE, SuSE Linux Enterprise Server 7.0
• SuSE, SuSE Linux Office Server
• Trustix, Secure Linux 1.5
• Turbolinux, Turbolinux 7 Server
• Turbolinux, Turbolinux 7 Workstation
• Turbolinux, Turbolinux 8 Server
• Turbolinux, Turbolinux 8 Workstation
• Turbolinux, Turbolinux Advanced Server 6
• Turbolinux, Turbolinux Appliance Server 1.0 Hosting Ed
• Turbolinux, Turbolinux Appliance Server 1.0 Workgroup Ed
• Turbolinux, Turbolinux Server 6.1
• Turbolinux, Turbolinux Server 6.5
• Turbolinux, Turbolinux Workstation 6.0

Remedy:

Upgrade to the latest version of Apache HTTP Server (1.3.30-dev or later), available from the Apache HTTP Server Web site. See References.

For OpenBSD 3.3:
Apply the 019_httpd2.patch, available from the OpenBSD 3.3 errata Web site. See References.

For Slackware Linux:
Upgrade to the latest apache package, as listed below. Refer to slackware-security Mailing List, Wed, 12 May 2004 16:54:58 -0700 (PDT) for more information. See References.

Slackware Linux 8.1 and 9.0: 1.3.29-i386-2 or later
Slackware Linux 9.1: 1.3.29-i486-2 or later
Slackware Linux -current: 1.3.31-i486-1

For Trustix Secure Linux:
Upgrade to the latest apache package, as listed below. Refer to Trustix Secure Linux Security Advisory #2004-0027 for more information. See References.

Trustix Secure Linux 1.5: 1.3.31-1tr or later

For Mandrake Linux:
Upgrade to the latest apache package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2004:046 : apache for more information. See References.

Mandrake Linux 9.1: 1.3.27_1.3.4-7.1.91mdk or later
Mandrake Linux 9.2: 1.3.28_1.3.4-1.1.92mdk or later
Mandrake Linux Multi Network Firewall 8.2: 1.3.23-4.4.M82mdk or later
Mandrake Linux Corporate Server 2.1: 1.3.26-7.1.C21mdk or later
Mandrake Linux 10.0: 1.3.29-1.1.100mdk or later

For Gentoo Linux:
Upgrade to the latest version of apache (1.3.31 or later), as listed in GLSA 200405-22. See References.

For HP-UX B.11.04 with Virtualvault 4.7, Virtualvault 4.6, or Virtualvault 4.5:
Apply the appropriate patches for your system, as listed in HP Security Bulletin HPSBUX01069. See References.

For Sun Solaris:
Apply the appropriate patch for your system, as listed below. Refer to Sun Alert ID: 57628 for more information. See References.

SPARC Platform
Solaris 8 with patch 116973-01 or later
Solaris 9 with patch 113146-05 or later

x86 Platform
Solaris 8 with patch 116974-01 or later
Solaris 9 with patch 114145-04 or later

For OpenPKG:
Refer to OpenPKG Security Advisory OpenPKG-SA-2004.021 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Obtain Information

References:

• Apache HTTP Server Project Web site, Welcome! - The Apache HTTP Server Project at http://httpd.apache.org/.
• CIAC Information Bulletin O-103, Apache HTTP Server mod_access Information Disclosure at http://www.ciac.org/ciac/bulletins/o-103.shtml.
• CIAC INFORMATION BULLETIN P-273, Updated Solaris 8 Patches for Apache Security Vulnerabilities at http://www.ciac.org/ciac/bulletins/p-273.shtml.
• GLSA 200405-22, Apache 1.3: Multiple vulnerabilities at http://www.linuxsecurity.com/content/view/106111/104/.
• OpenBSD 3.3 errata Web site, 019: SECURITY FIX: March 13, 2004 at http://www.openbsd.org/errata33.html.
• OpenBSD 3.4 errata Web site, 014: SECURITY FIX: March 13, 2004 at http://www.openbsd.org/errata.html.
• slackware-security Mailing List, Wed, 12 May 2004 16:54:58 -0700 (PDT), apache (SSA:2004-133-01) at http://www.slackware.org/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.529643.
• Sun Alert ID: 57628, Security Vulnerabilities in the Apache Web Server and Apache Modules at http://sunsolve.sun.com/search/document.do?assetkey=1-26-57628-1&searchclause=.
• Sun Alert ID: 57628, Security Vulnerabilities in the Apache Web Server and Apache Modules at http://sunsolve.sun.com/search/document.do?assetkey=1-26-57628-1&searchclause=.
• Trustix Secure Linux Security Advisory #2004-0027, apache at http://www.linuxsecurity.com/content/view/106042/109/.
• BID-9829: Apache Mod_Access Access Control Rule Bypass Vulnerability
• BID-9876: VocalTec VGW4/8 Telephony Gateway Remote Authentication Bypass Vulnerability
• CVE-2003-0993: mod_access in Apache 1.3 before 1.3.30, when running big-endian 64-bit platforms, does not properly parse Allow/Deny rules using IP addresses without a netmask, which could allow remote attackers to bypass intended access restrictions.
• GLSA-200405-22: Apache 1.3: Multiple vulnerabilities
• MDKSA-2004:046: Updated apache packages fix a number of vulnerabilities
• OpenPKG-SA-2004.021: Apache
• SUSE-SA:2003:014: kdelibs: remote file creation
• SUSE-SA:2004:015: cvs: remote command execution

Reported:

Mar 08, 2004

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