VDB-51300 · CVE-2009-4418 · SBV-37202

PHP up to 5.3.0 unserialize serialized numeric error

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in PHP and classified as problematic. The impacted element is the function unserialize. The manipulation of the argument serialized results in numeric error. This vulnerability is known as CVE-2009-4418. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in PHP (Programming Language Software). Affected is the function unserialize. The manipulation of the argument serialized with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. CVE summarizes:

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.

The weakness was published 12/24/2009 (Website). The advisory is shared for download at suspekt.org. This vulnerability is traded as CVE-2009-4418 since 12/24/2009. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Vulnerability Center (SBV-37202†). Similar entry is available at VDB-51291. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Programming Language Software

Name

Version

License

open-source

Website

Product: https://www.php.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

OpenVAS ID: 900993
OpenVAS Name: PHP unserialize() Function Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/24/2009 🔍
12/24/2009 +0 days 🔍
12/24/2009 +0 days 🔍
12/24/2009 +0 days 🔍
11/13/2012 +1055 days 🔍
03/18/2015 +855 days 🔍
04/21/2017 +765 days 🔍

Sourcesinfo

Product: php.org

Advisory: suspekt.org
Status: Not defined

CVE: CVE-2009-4418 (🔍)
GCVE (CVE): GCVE-0-2009-4418
GCVE (VulDB): GCVE-100-51300
Vulnerability Center: 37202 - PHP 5.3.0 and Earlier Remote Denial of Service Vulnerability via a Deeply Nested Serialized Variable, Medium

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 04/21/2017 11:25
Changes: 03/18/2015 15:15 (57), 04/21/2017 11:25 (1)
Complete: 🔍
Cache ID: 216::103