Apache < 2.0.50 Multiple Remote DoS

This script is Copyright (C) 2004-2012 Tenable Network Security, Inc.


Synopsis :

The remote web server is affected by a denial of service.

Description :

The remote host appears to be running a version of Apache 2.x that is
older than 2.0.50.

There is denial of service flaw in Apache 2.0.x that can be triggered
by sending a specially crafted HTTP request, which results in the
consumption of an arbitrary amount of memory. On 64-bit systems with
more than 4GB virtual memory, this may lead to heap based buffer
overflow.

There is also a denial of service vulnerability in mod_ssl's
'ssl_io_filter_cleanup' function. By sending a request to a vulnerable
server over SSL and closing the connection before the server can send
a response, an attacker can cause a memory violation that crashes the
server.

See also :

http://www.guninski.com/httpd1.html

Solution :

Upgrade to Apache 2.0.50 or newer.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.7
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Web Servers

Nessus Plugin ID: 12293 (apache_input_header_folding_dos.nasl)

Bugtraq ID: 10619
12877

CVE ID: CVE-2004-0493
CVE-2004-0748