Vulnerability Details : CVE-2009-4418

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.

Vulnerability category: Denial of service

Published 2009-12-24 17:30:00

Updated 2018-10-30 16:25:36

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2009-4418

Probability of exploitation activity in the next 30 days: 0.13%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 47 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2009-4418

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	[email protected]
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial

CWE ids for CVE-2009-4418

CWE-189

Assigned by: [email protected] (Primary)

Vendor statements for CVE-2009-4418

Red Hat 2010-01-04

Red Hat does not consider this to be a security flaw. For further details, see https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-4418

References for CVE-2009-4418

Products affected by CVE-2009-4418

PHP » PHP
Versions up to, including, (<=) 5.3.0
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0 Update RC2
cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0 Update RC3
cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0 Update RC1
cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.1
cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.2
cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0
cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.3
cpe:2.3:a:php:php:5.0.3:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.4
cpe:2.3:a:php:php:5.0.4:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.5
cpe:2.3:a:php:php:5.0.5:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update Beta1
cpe:2.3:a:php:php:5.0.0:beta1:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update Beta4
cpe:2.3:a:php:php:5.0.0:beta4:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update RC1
cpe:2.3:a:php:php:5.0.0:rc1:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update Beta2
cpe:2.3:a:php:php:5.0.0:beta2:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update Beta3
cpe:2.3:a:php:php:5.0.0:beta3:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update RC2
cpe:2.3:a:php:php:5.0.0:rc2:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.0.0 Update RC3
cpe:2.3:a:php:php:5.0.0:rc3:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.0
cpe:2.3:a:php:php:5.1.0:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.1
cpe:2.3:a:php:php:5.1.1:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.2
cpe:2.3:a:php:php:5.1.2:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.3
cpe:2.3:a:php:php:5.1.3:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.4
cpe:2.3:a:php:php:5.1.4:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.6
cpe:2.3:a:php:php:5.1.6:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.1.5
cpe:2.3:a:php:php:5.1.5:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.0
cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.10
cpe:2.3:a:php:php:5.2.10:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.8
cpe:2.3:a:php:php:5.2.8:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.3
cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.4 Windows Edition
cpe:2.3:a:php:php:5.2.4:*:windows:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.9
cpe:2.3:a:php:php:5.2.9:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.4
cpe:2.3:a:php:php:5.2.4:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.6
cpe:2.3:a:php:php:5.2.6:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.7
cpe:2.3:a:php:php:5.2.7:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.11
cpe:2.3:a:php:php:5.2.11:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.1
cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.5
cpe:2.3:a:php:php:5.2.5:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5.2.2
cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:*
Matching versions
PHP » PHP » Version: 5
cpe:2.3:a:php:php:5:*:*:*:*:*:*:*
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