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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200407-03] Apache 2: Remote denial of service attack

Vulnerability Assessment Details

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

Vulnerability Assessment Summary
Apache 2: Remote denial of service attack

Detailed Explanation for this Vulnerability Assessment
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

A possible hacker 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:

References:
http://www.guninski.com/httpd1.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0493

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

Network Security Threat Level: Medium

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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