CVE-2009-4418 Denial of service in n/a
Attackers can cause denial of service in PHP applications by submitting deeply nested serialized data, leading to excessive resource consumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-4418?
CVE-2009-4418 is a medium-severity denial of service vulnerability in Php Php, published on 24 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.
Weakness: CWE-189
Which versions are affected by CVE-2009-4418?
It affects 1 product.
Products include Php Php.
How do I fix CVE-2009-4418?
No fix has been published for CVE-2009-4418 yet. Limit exposure of the affected software until one is available.
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-2009-4418 being exploited?
There is no known exploitation of CVE-2009-4418 in the wild and no public exploit code.
Other vulnerabilities in Php Php
Sources
Also known as GHSA-37px-x6g4-3pm2.