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5.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in PHP. Affected by this issue is some unknown functionality of the component PCRE. This manipulation causes numeric error. This vulnerability is tracked as CVE-2008-2108. Moreover, an exploit is present. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP (Programming Language Software). It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component PCRE. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect availability. The summary by CVE is:

The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 64-bit systems, performs a multiplication that generates a portion of zero bits during conversion due to insufficient precision, which produces 24 bits of entropy and simplifies brute force attacks against protection mechanisms that use the rand and mt_rand functions.

The bug was discovered 05/06/2008. The weakness was disclosed 05/02/2008 by Maksymilian Arciemowicz (ryan) with php.net (Website). The advisory is shared at php.net. This vulnerability is known as CVE-2008-2108 since 05/07/2008. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but an exploit is available.

It is declared as highly functional. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 33524 (CentOS 3 / 5 : php (CESA-2008:0544)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117267 (CentOS Security Update for PHP (CESA-2008:0544)).

Upgrading to version 5.2.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at php.net. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (42226), Tenable (33524), SecurityFocus (BID 29009†), OSVDB (44910†) and Secunia (SA30048†). The entries VDB-3693, VDB-3695, VDB-3696 and VDB-3694 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Programming Language Software

Name

• PHP

Version

• 4.4.7
• 5
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.1.6
• 5.2.0
• 5.2.1
• 5.2.2
• 5.2.3
• 5.2.4

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: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 33524
Nessus Name: CentOS 3 / 5 : php (CESA-2008:0544)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63954
OpenVAS Name: Debian Security Advisory DSA 1789-1 (php5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.2.6
Patch: php.net

Timelineinfo

05/01/2008 🔍
05/02/2008 +1 days 🔍
05/06/2008 +4 days 🔍
05/07/2008 +1 days 🔍
05/07/2008 +0 days 🔍
05/07/2008 +0 days 🔍
05/07/2008 +0 days 🔍
05/20/2008 +12 days 🔍
06/30/2008 +41 days 🔍
07/16/2008 +16 days 🔍
07/17/2008 +1 days 🔍
08/12/2019 +4043 days 🔍

Sourcesinfo

Product: php.org

Advisory: php.net
Researcher: Maksymilian Arciemowicz (ryan)
Organization: php.net
Status: Confirmed

CVE: CVE-2008-2108 (🔍)
GCVE (CVE): GCVE-0-2008-2108
GCVE (VulDB): GCVE-100-3697

OVAL: 🔍

X-Force: 42226 - PHP GENERATE_SEED() weak security, Low Risk
SecurityFocus: 29009 - PHP 5.2.5 and Prior Versions Multiple Vulnerabilities
Secunia: 30048
OSVDB: 44910 - PHP GENERATE_SEED Macro Multiplication Precision Weakness Random Functions Based Protection Bypass
Vulnerability Center: 18707 - PHP GENERATE_SEED Macro on 64-bit Systems Allows Remote Security Restrictions Bypass, Low

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/20/2008 09:43
Updated: 08/12/2019 09:41
Changes: 05/20/2008 09:43 (92), 08/12/2019 09:41 (6)
Complete: 🔍
Cache ID: 216:2F2:103

Discussion

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