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Last updated: Sun Nov 22 16:29:42 EST 2009

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National Cyber-Alert System

Vulnerability Summary for CVE-2008-2108

Original release date:05/07/2008
Last revised:05/08/2009
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:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: FEDORA
Name: FEDORA-2008-3606
Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00779.html
External Source: FEDORA
Name: FEDORA-2008-3864
Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00773.html
External Source: XF
Name: php-generateseed-weak-security(42226)
Hyperlink:http://xforce.iss.net/xforce/xfdb/42226
External Source: UBUNTU
Name: USN-628-1
Hyperlink:http://www.ubuntu.com/usn/usn-628-1
External Source: MISC
Name: http://www.sektioneins.de/advisories/SE-2008-02.txt
Hyperlink:http://www.sektioneins.de/advisories/SE-2008-02.txt
External Source: BUGTRAQ
Name: 20080506 Advisory SE-2008-02: PHP GENERATE_SEED() Weak Random Number Seed Vulnerability
Hyperlink:http://www.securityfocus.com/archive/1/archive/1/491683/100/0/threaded
External Source: REDHAT
Name: RHSA-2008:0582
Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0582.html
External Source: REDHAT
Name: RHSA-2008:0546
Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0546.html
External Source: REDHAT
Name: RHSA-2008:0545
Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0545.html
External Source: REDHAT
Name: RHSA-2008:0544
Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0544.html
External Source: REDHAT
Name: RHSA-2008:0505
Hyperlink:http://www.redhat.com/support/errata/RHSA-2008-0505.html
External Source: MANDRIVA
Name: MDVSA-2008:130
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:130
External Source: MANDRIVA
Name: MDVSA-2008:129
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:129
External Source: MANDRIVA
Name: MDVSA-2008:128
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:128
External Source: MANDRIVA
Name: MDVSA-2008:127
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:127
External Source: MANDRIVA
Name: MDVSA-2008:126
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:126
External Source: MANDRIVA
Name: MDVSA-2008:125
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2008:125
External Source: DEBIAN
Name: DSA-1789
Hyperlink:http://www.debian.org/security/2009/dsa-1789
External Source: SREASON
Name: 3859
Hyperlink:http://securityreason.com/securityalert/3859
External Source: SECUNIA
Name: 35003
Hyperlink:http://secunia.com/advisories/35003
External Source: SECUNIA
Name: 31200
Hyperlink:http://secunia.com/advisories/31200
External Source: SECUNIA
Name: 31124
Hyperlink:http://secunia.com/advisories/31124
External Source: SECUNIA
Name: 31119
Hyperlink:http://secunia.com/advisories/31119
External Source: SECUNIA
Name: 30828
Hyperlink:http://secunia.com/advisories/30828
External Source: SECUNIA
Name: 30757
Hyperlink:http://secunia.com/advisories/30757
External Source: FULLDISC
Name: 20080506 Advisory SE-2008-02: PHP GENERATE_SEED() Weak Random Number Seed Vulnerability
Hyperlink:http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html

Vulnerable software and versions

Nav control imageConfiguration 1
spacerNav control imageOR
spacerspacerNav control image* cpe:/a:php:php:5
spacerspacerNav control image* cpe:/a:php:php:5.0.0:beta1
spacerspacerNav control image* cpe:/a:php:php:5.0.0:beta2
spacerspacerNav control image* cpe:/a:php:php:5.0.0:beta3
spacerspacerNav control image* cpe:/a:php:php:5.0.0:rc1
spacerspacerNav control image* cpe:/a:php:php:5.0.0:rc2
spacerspacerNav control image* cpe:/a:php:php:5.0.0:rc3
spacerspacerNav control image* cpe:/a:php:php:5.0.1
spacerspacerNav control image* cpe:/a:php:php:5.0.2
spacerspacerNav control image* cpe:/a:php:php:5.0.3
spacerspacerNav control image* cpe:/a:php:php:5.0.4
spacerspacerNav control image* cpe:/a:php:php:5.0.5
spacerspacerNav control image* cpe:/a:php:php:5.1.0
spacerspacerNav control image* cpe:/a:php:php:5.1.1
spacerspacerNav control image* cpe:/a:php:php:5.1.2
spacerspacerNav control image* cpe:/a:php:php:5.1.3
spacerspacerNav control image* cpe:/a:php:php:5.1.4
spacerspacerNav control image* cpe:/a:php:php:5.1.5
spacerspacerNav control image* cpe:/a:php:php:5.1.6
spacerspacerNav control image* cpe:/a:php:php:5.2.0
spacerspacerNav control image* cpe:/a:php:php:5.2.1
spacerspacerNav control image* cpe:/a:php:php:5.2.2
spacerspacerNav control image* cpe:/a:php:php:5.2.3
spacerspacerNav control image* cpe:/a:php:php:5.2.4
spacerspacerNav control image* cpe:/a:php:php:4.4.7 and previous versions
* Denotes Vulnerable Software
* Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2108