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Last updated: 10/30/2014 1:36:40 PM

CVE Publication rate: 46.8

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National Cyber Awareness System

Vulnerability Summary for CVE-2008-2108

Original release date: 05/07/2008
Last revised: 10/30/2012
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: MISC
Name: http://www.sektioneins.de/advisories/SE-2008-02.txt
External Source: REDHAT
Name: RHSA-2008:0505
External Source: SECUNIA
Name: 31124
External Source: UBUNTU
Name: USN-628-1
External Source: FEDORA
Name: FEDORA-2008-3606
External Source: SECUNIA
Name: 32746
External Source: SECUNIA
Name: 30757
External Source: REDHAT
Name: RHSA-2008:0546
External Source: REDHAT
Name: RHSA-2008:0582
External Source: BUGTRAQ
Name: 20080506 Advisory SE-2008-02: PHP GENERATE_SEED() Weak Random Number Seed Vulnerability
External Source: MANDRIVA
Name: MDVSA-2008:130
External Source: MANDRIVA
Name: MDVSA-2008:128
External Source: SECUNIA
Name: 31119
External Source: FULLDISC
Name: 20080506 Advisory SE-2008-02: PHP GENERATE_SEED() Weak Random Number Seed Vulnerability
External Source: SECUNIA
Name: 35003
External Source: MANDRIVA
Name: MDVSA-2008:125
External Source: SECUNIA
Name: 31200
External Source: MANDRIVA
Name: MDVSA-2008:126
External Source: GENTOO
Name: GLSA-200811-05
External Source: XF
Name: php-generateseed-weak-security(42226)
External Source: DEBIAN
Name: DSA-1789
External Source: FEDORA
Name: FEDORA-2008-3864
External Source: MANDRIVA
Name: MDVSA-2008:127
External Source: SREASON
Name: 3859
External Source: SECUNIA
Name: 30828
External Source: REDHAT
Name: RHSA-2008:0544
External Source: REDHAT
Name: RHSA-2008:0545
External Source: MANDRIVA
Name: MDVSA-2008:129
External Source: OVAL
Name: oval:org.mitre.oval:def:10844

References to Check Content

Identifier: oval:org.mitre.oval:def:10844
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)