CVE-2009-4017 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 12% (pctl 96)
Patch early
A public exploit exists.
Description
PHP before 5.2.12 and 5.3.x before 5.3.1 does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of service (resource exhaustion), and makes it easier for remote attackers to exploit local file inclusion vulnerabilities, via multiple requests, related to lack of support for the max_file_uploads directive.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 12.04% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-770 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-11-24 |
| Last modified | 2026-06-16 |
Affected (3)
| Vendor | Product |
|---|---|
| apple | mac os x |
| debian | debian linux |
| php | php |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | PHP < 5.3.1 - 'MultiPart/form-data' Denial of Service | 2009-11-27 |
References
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://marc.info/?l=bugtraq&m=127680701405735&w=2
- http://news.php.net/php.announce/79
- http://seclists.org/fulldisclosure/2009/Nov/228
- http://secunia.com/advisories/37482
- http://secunia.com/advisories/37821
- http://secunia.com/advisories/40262
- http://secunia.com/advisories/41480
- http://secunia.com/advisories/41490
- http://support.apple.com/kb/HT4077
- http://www.acunetix.com/blog/websecuritynews/php-multipartform-data-denial-of-service/
- http://www.debian.org/security/2009/dsa-1940
- http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02512995
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:303
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:305
- http://www.openwall.com/lists/oss-security/2009/11/20/2
- http://www.openwall.com/lists/oss-security/2009/11/20/7
- http://www.php.net/ChangeLog-5.php
- http://www.php.net/releases/5_2_12.php
- http://www.php.net/releases/5_3_1.php
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