CVE-2009-4017 Denial of service in n/a
Remote attackers can cause denial of service via resource exhaustion by sending multiple multipart/form-data POST requests to PHP.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-4017?
CVE-2009-4017 is a medium-severity denial of service vulnerability in Apple Mac Os X, published on 24 Nov 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2009-4017?
It affects 3 products.
Products include Apple Mac Os X, Debian Debian Linux, Php Php.
How do I fix CVE-2009-4017?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2009-4017 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-4017 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Apple Mac Os X
Sources
Also known as GHSA-79rp-c2fh-g5j7.