CVE-2007-3303
Summary
| CVE | CVE-2007-3303 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2007-06-20 22:30:00 UTC |
| Updated | 2026-04-23 00:35:47 UTC |
| Description | 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:L/AC:L/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Apache | Http Server | 2.0.59 | All | All | All |
| Application | Apache | Http Server | 2.2.4 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Apache HTTP Server Worker Process Multiple Denial of Service Vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| SecurityReason - Apache Prefork MPM vulnerabilities - Report | af854a3a-2127-422b-91ae-364da2661108 | securityreason.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| osvdb.org/37050 | af854a3a-2127-422b-91ae-364da2661108 | osvdb.org | |
| security.psnc.pl/files/apache_report.pdf | af854a3a-2127-422b-91ae-364da2661108 | security.psnc.pl | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
| Organization | Published | Contributor | Statement |
|---|---|---|---|
| Apache | 2008-07-02 | Mark J Cox | 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. |
| Red Hat | 2007-06-26 | Mark J Cox | 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. |
There are currently no legacy QID mappings associated with this CVE.