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Vulnerability record · CVE-2008-4102 · published 18 September 2008

CVE-2008-4102: Joomla vulnerability

Joomla · Joomla

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.

7.5 CVSS 2.0 High EPSS 2.4% · top 16.8% CWE-189 · CWE-189
7.5CVSS 2.0 base score
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-3225Joomla permissions and access controls vulnerabilityJoomla! before 1.5.4 allows attackers to access administration functionality, which has unknown impact and attack vectors related to a missing "LDAP …EPSS 1.5%10.0CVE-2006-1047Joomla vulnerabilityUnspecified vulnerability in the "Remember Me login functionality" in Joomla! 1.0.7 and earlier has unknown impact and attack vectors.EPSS 1.9%10.0CVE-2006-0303Joomla vulnerabilityMultiple unspecified vulnerabilities in the (1) publishing component, (2) Contact Component, (3) TinyMCE Compressor, and (4) other components in Joom…EPSS 1.4%10.0CVE-2005-3773Joomla vulnerabilityUnspecified vulnerability in Joomla! before 1.0.4 has unknown impact and attack vectors, related to "Potential misuse of Media component file managem…EPSS 1.7%7.8CVE-2006-1028Joomla vulnerabilityfeedcreator.class.php (aka the syndication component) in Joomla! 1.0.7 allows remote attackers to cause a denial of service (stressed file cache) by …EPSS 1.9%7.5CVE-2008-5671Joomla code injection vulnerabilityPHP remote file inclusion vulnerability in index.php in Joomla! 1.0.11 through 1.0.14, when RG_EMULATION is enabled in configuration.php, allows remo…EPSS 1.7%7.5CVE-2008-4105Joomla improper input validation vulnerabilityJRequest in Joomla! 1.5 before 1.5.7 does not sanitize variables that were set with JRequest::setVar, which allows remote attackers to conduct "varia…EPSS 1.7%7.5CVE-2008-3227Joomla link following vulnerabilityUnspecified vulnerability in Joomla! before 1.5.4 has unknown impact and attack vectors related to a "User Redirect Spam fix," possibly an open redir…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2008-4102), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.