GLSA-200407-03 : Apache 2: Remote denial of service attack

medium Nessus Plugin ID 14536


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200407-03 (Apache 2: Remote denial of service attack)

A bug in the protocol.c file handling header lines will cause Apache to allocate memory for header lines starting with TAB or SPACE.
Impact :

An attacker can exploit this vulnerability to perform a Denial of Service attack by causing Apache to exhaust all memory. On 64 bit systems with more than 4GB of virtual memory a possible integer signedness error could lead to a buffer based overflow causing Apache to crash and under some circumstances execute arbitrary code as the user running Apache, usually 'apache'.
Workaround :

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version:


Apache 2 users should upgrade to the latest version of Apache:
# emerge sync # emerge -pv '>=www-servers/apache-2.0.49-r4' # emerge '>=www-servers/apache-2.0.49-r4'

See Also

Plugin Details

Severity: Medium

ID: 14536

File Name: gentoo_GLSA-200407-03.nasl

Version: 1.16

Type: local

Published: 8/30/2004

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 6.0


Risk Factor: Medium

Base Score: 6.4

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:apache, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 7/4/2004

Vulnerability Publication Date: 6/28/2004

Reference Information

CVE: CVE-2004-0493

GLSA: 200407-03