Apache < 2.0.50 Input Header Folding and mod_ssl DoS

Medium Log Correlation Engine Plugin ID 800578

Synopsis

The remote host is vulnerable to a Denial of Service (DoS) attack.

Description

The remote host is using a version of the Apache web server that is less than 2.0.50. This version is vulnerable to two (2) remote Denial of Service (DoS) attacks. The first issue stems from a failure to properly manage memory and could lead to the consumption of massive amounts of memory and, alledgedly,a potential heap overflow. The second issue stems from mod_ssl's inability to handle sessions that terminate before any bytes of data have been sent. This second flaw results in a memory violation that leads to a loss of availability to valid users.

Solution

Upgrade to Apache 2.0.50 or higher.

See Also

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

Plugin Details

Severity: Medium

ID: 800578

File Name: 800578.prm

Family: Web Servers

Nessus ID: 12293

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:H/RL:OF/RC:C

Reference Information

CVE: CVE-2004-0823, CVE-2004-0493

BID: 11137, 10619, 12877