Apache HTTP Server mod_dav module LOCK denial of service
| apache-moddav-lock-dos (17366) |  Low Risk |
Description:
Apache HTTP Server is vulnerable to a denial of service attack, caused by a vulnerability in the mod_dav distributed authoring and versioning (DAV) module. By sending specially-crafted LOCK requests, a remote attacker, with LOCK method privileges, could cause an httpd child process to crash.
Platforms Affected:
- Apache, HTTP Server 2.0.47
- Apache, HTTP Server 2.0.50
- Conectiva, Linux 10
- Conectiva, Linux 9.0
- Debian, Debian Linux 3.0
- Gentoo, Linux
- HP, HP-UX 11.00
- HP, HP-UX 11.11
- HP, HP-UX 11.22
- HP, HP-UX 11.23
- MandrakeSoft, Mandrake Linux 10.0
- MandrakeSoft, Mandrake Linux 10.0 AMD64
- MandrakeSoft, Mandrake Linux 9.2
- MandrakeSoft, Mandrake Linux 9.2 AMD64
- RedHat, Enterprise Linux 3 WS
- RedHat, Enterprise Linux 3 ES
- RedHat, Enterprise Linux 3 Desktop
- RedHat, Enterprise Linux 3 AS
- Trustix, Enterprise Server 2
- Trustix, Secure Linux 2.0
- Trustix, Secure Linux 2.1
- Turbolinux, Turbolinux 10 Desktop
- Turbolinux, Turbolinux 10 F...
- Turbolinux, Turbolinux 10 Server
- Turbolinux, Turbolinux Home
Remedy:
Upgrade to the latest version of Apache HTTP Server (2.0.51-dev or later), available from Apache HTTP Server Project Web site.
For Red Hat Linux:
Upgrade to the latest httpd package, as listed below. Refer to RHSA-2004:463-09 for more information. See References.
Red Hat Enterprise Linux AS (v. 3), ES (v. 3), WS (v. 3), Desktop: 2.0.46-40.ent.x86_64 or later
For Trustix Secure Linux:
Upgrade to the latest apache package, as listed below. Refer to Trustix Secure Linux Security Advisory #2004-0047 for more information. See References.
Trustix Secure Linux 2.0: 2.0.51-0.1tr or later
Trustix Secure Linux 2.1 and Enterprise Server 2: 2.0.51-1tr or later
For Gentoo Linux:
Upgrade to the latest version of apache (2.0.51, < 2.0 or later) or mod_dav (1.0.3-r2 or later), as listed in GLSA 200409-21. See References.
For Conectiva Linux:
Upgrade to the latest apache package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2004:868 for more information. See References.
Conectiva Linux 10: 2.0.49-61251U10_1cl or later
Conectiva Linux 9: 2.0.45-28790U90_8cl or later
For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest apache package, as listed below. Refer to DSA-558-1 for more information. See References.
Debian GNU/Linux 3.0 (woody): 1.0.3-3.1 or later
For HP 11.00, 11.11, 11.22, and 11.23:
Apply the appropriate patch for your system, as listed in Hewlett-Packard Company Security Bulletin HPSBUX01090 for more information. See References.
For TurboLinux:
Upgrade to the latest httpd package (2.0.51-8 or later), as listed in Turbolinux Security Advisory TLSA-2005-2. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- Apache HTTP Server Project Web site, Apache HTTPD Project - The Apache HTTPD Server Project at http://httpd.apache.org.
- Conectiva Linux Security Announcement CLSA-2004:868, Several vulnerabilities in apache, mod_ssl and mod_dav at http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000868.
- IBM Systems Support Web site, Support for HMC at https://www14.software.ibm.com/webapp/set2/sas/f/hmc/power5/install/v61.Readme.html#MH01110.
- Trustix Secure Linux Security Advisory #2004-0047, Several security holes at http://www.trustix.net/errata/2004/0047/.
- BID-11185: Apache Mod_DAV LOCK Denial Of Service Vulnerability
- CVE-2004-0809: The mod_dav module in Apache 2.0.50 and earlier allows remote attackers to cause a denial of service (child process crash) via a certain sequence of LOCK requests for a location that allows WebDAV authoring access.
- DSA-558: libapache-mod-dav -- null pointer dereference
- GLSA-200409-21: Apache 2, mod_dav: Multiple vulnerabilities
- MDKSA-2004:096: Updated apache2 packages fix multiple vulnerabilities
- RHSA-2004-463: httpd security update
Reported:
Sep 14, 2004
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