Vulnerability CVE-2008-2108

Vulnerability CVE-2008-2108

Published: 2008-05-07 Modified: 2012-02-12

Description:

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.

See advisories in our WLB2 database:

	Topic	Author	Date
Med.	PHP GENERATE_SEED() Weak Random Number Seed Vulnerability	Stefan Esser	10.05.2008

Type:

CWE-189

(Numeric Errors)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score	Impact Subscore	Exploitability Subscore
7.5/10	6.4/10	10/10

Exploit range	Attack complexity	Authentication
Remote	Low	No required
Confidentiality impact	Integrity impact	Availability impact
Partial	Partial	Partial

Affected software
PHP -> PHP

References:

http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html

http://security.gentoo.org/glsa/glsa-200811-05.xml

http://securityreason.com/securityalert/3859

http://www.debian.org/security/2009/dsa-1789

http://www.mandriva.com/security/advisories?name=MDVSA-2008:125

http://www.mandriva.com/security/advisories?name=MDVSA-2008:126

http://www.mandriva.com/security/advisories?name=MDVSA-2008:127

http://www.mandriva.com/security/advisories?name=MDVSA-2008:128

http://www.mandriva.com/security/advisories?name=MDVSA-2008:129

http://www.mandriva.com/security/advisories?name=MDVSA-2008:130

http://www.redhat.com/support/errata/RHSA-2008-0505.html

http://www.redhat.com/support/errata/RHSA-2008-0544.html

http://www.redhat.com/support/errata/RHSA-2008-0545.html

http://www.redhat.com/support/errata/RHSA-2008-0546.html

http://www.redhat.com/support/errata/RHSA-2008-0582.html

http://www.securityfocus.com/archive/1/491683/100/0/threaded

http://www.sektioneins.de/advisories/SE-2008-02.txt

http://www.ubuntu.com/usn/usn-628-1

https://exchange.xforce.ibmcloud.com/vulnerabilities/42226

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10844

https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00773.html

https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00779.html

Vulnerability CVE-2008-2108

See advisories in our WLB2 database:

Med.

PHP GENERATE_SEED() Weak Random Number Seed Vulnerability

CWE-189

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

7.5/10

6.4/10

10/10

Remote

Low

No required

Partial

Partial

Partial

Affected software

References: