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Vulnerability Details : CVE-2007-3303

Apache httpd 2.0.59 and 2.2.4, with the Prefork MPM module, allows local users to cause a denial of service via certain code sequences executed in a worker process that (1) stop request processing by killing all worker processes and preventing creation of replacements or (2) hang the system by forcing the master process to fork an arbitrarily large number of worker processes. NOTE: This might be an inherent design limitation of Apache with respect to worker processes in hosted environments.
Publish Date : 2007-06-20 Last Update Date : 2012-10-30
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute Code
CWE ID 94

- Vendor Statements

In the security model used by Apache httpd, the less-privileged child processes completely handle the servicing of new connections. Any local user who is able to run arbitrary code in those children is therefore able to prevent new requests from being serviced, by design. Such users will also be able to "simulate" server load and force the parent to create children up to the configured limits, by design. A server with untrusted local users must be configured to use a solution like "suexec" if its required to allow the users to execute CGI (etc) scripts.
Source: Apache
Not a vulnerability. In the security model used by Apache httpd, the less-privileged child processes (running as the "apache" user) completely handle the servicing of new connections. Any local user who is able to run arbitrary code in those children is therefore able to prevent new requests from being serviced, by design. Such users will also be able to "simulate" server load and force the parent to create children up to the configured limits, by design.
Source: Redhat

- Products Affected By CVE-2007-3303

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Http Server 2.0.59 Version Details Vulnerabilities
2 Application Apache Http Server 2.2.4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Http Server 2

- References For CVE-2007-3303

http://www.securityfocus.com/archive/1/archive/1/471832/100/0/threaded
BUGTRAQ 20070619 Apache Prefork MPM vulnerabilities - Report
http://www.securityfocus.com/archive/1/archive/1/469899/100/0/threaded
BUGTRAQ 20070529 Apache httpd vulenrabilities
http://security.psnc.pl/files/apache_report.pdf
http://osvdb.org/37050
OSVDB 37050
http://www.securityfocus.com/bid/24215
BID 24215 Apache HTTP Server Worker Process Multiple Denial of Service Vulnerabilities Release Date:2010-08-05
http://securityreason.com/securityalert/2814
SREASON 2814

- Metasploit Modules Related To CVE-2007-3303

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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