CVE-2008-2107

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2008-05-07 · updated 2026-06-16
Weakness: CWE-189

Description

The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 32-bit systems, performs a multiplication using values that can produce a zero seed in rare circumstances, which allows context-dependent attackers to predict subsequent values of the rand and mt_rand functions and possibly bypass protection mechanisms that rely on an unknown initial seed.

Affected products

PHP: through 4.4.7; 5, 5.0.0-beta1, 5.0.0-beta2, 5.0.0-beta3, 5.0.0-rc1, 5.0.0-rc2 (+18)

References

http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00001.html
http://secunia.com/advisories/30757
http://secunia.com/advisories/30828
http://secunia.com/advisories/30967
http://secunia.com/advisories/31119
http://secunia.com/advisories/31124
http://secunia.com/advisories/31200
http://secunia.com/advisories/32746
http://secunia.com/advisories/35003
http://security.gentoo.org/glsa/glsa-200811-05.xml
http://securityreason.com/securityalert/3859

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