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    CVE-2008-4102

    Joomla! 1.5 before 1.5.7 initializes PHP's PRNG with a weak seed, which makes it easier for attackers to guess the pseudo-random values produced by PHP's mt_rand function, as demonstrated by guessing password reset tokens, a different vulnerability than CVE-2008-3681.

    Published:Sep 18, 2008
    Last Modified:Apr 23, 2026
    EPS:Sep 18, 2008
    EPSS Score:0.00081
    CVSS Score:7.5

    Affected Products

    Vendor
    Joomla
    Product
    Joomla

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://developer.joomla.org/security/news/272-20080902-core-random-number-generation-flaw.html
    http://marc.info/?l=oss-security&m=122115344915232&w=2
    http://marc.info/?l=oss-security&m=122118210029084&w=2
    http://marc.info/?l=oss-security&m=122152798516853&w=2
    http://secunia.com/advisories/31789
    http://securityreason.com/securityalert/4271
    http://www.securityfocus.com/archive/1/496237/100/0/threaded
    http://www.sektioneins.de/advisories/SE-2008-04.txt
    http://www.suspekt.org/2008/08/17/mt_srand-and-not-so-random-numbers/
    https://exchange.xforce.ibmcloud.com/vulnerabilities/45068
    http://developer.joomla.org/security/news/272-20080902-core-random-number-generation-flaw.html
    http://marc.info/?l=oss-security&m=122115344915232&w=2
    http://marc.info/?l=oss-security&m=122118210029084&w=2
    http://marc.info/?l=oss-security&m=122152798516853&w=2
    http://secunia.com/advisories/31789
    http://securityreason.com/securityalert/4271
    http://www.securityfocus.com/archive/1/496237/100/0/threaded
    http://www.sektioneins.de/advisories/SE-2008-04.txt
    http://www.suspekt.org/2008/08/17/mt_srand-and-not-so-random-numbers/
    https://exchange.xforce.ibmcloud.com/vulnerabilities/45068

    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