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    CVE-2008-2108

    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.

    Published:May 6, 2008
    Last Modified:Apr 23, 2026
    EPS:May 7, 2008
    EPSS Score:0.05607
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Php
    Product
    Php
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Application Stack

    Exploits

    http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.htmlhttp://www.sektioneins.de/advisories/SE-2008-02.txthttp://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.htmlhttp://www.sektioneins.de/advisories/SE-2008-02.txt

    Common Weakness Enumeration

    CWE-331 Insufficient Entropy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-59 Session Credential Falsification through Prediction

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html
    http://secunia.com/advisories/30757
    http://secunia.com/advisories/30828
    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
    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
    http://archives.neohapsis.com/archives/fulldisclosure/2008-05/0103.html
    http://secunia.com/advisories/30757
    http://secunia.com/advisories/30828
    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High