critical
9.8
CWE
189 331
Advisory Published
Updated

CVE-2008-2108

First published: Wed May 07 2008(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP=5.1.5
PHP=5.1.2
PHP=5.1.1
PHP=5.0.0-beta1
PHP=5.1.6
PHP=5.2.2
PHP=5.0.5
PHP=5.0.1
PHP=5.1.4
PHP=5.0.4
PHP<=4.4.7
PHP=5.0.0-rc2
PHP=5.2.3
PHP=5.0.3
PHP=5.1.0
PHP=5.0.0-rc3
PHP=5.2.0
PHP=5.2.4
PHP=5.0.0-beta3
PHP=5.1.3
PHP=5.0.0-rc1
PHP=5.0.2
PHP=5.2.1
PHP=5
PHP=5.0.0-beta2
PHP>=4.0.0<4.4.8
PHP>=5.0.0<5.2.5
Fedora=8
Fedora=9
Ubuntu Linux=6.06
Ubuntu Linux=7.04
Ubuntu Linux=7.10
Ubuntu Linux=8.04
Debian=4.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2008-2108?

    CVE-2008-2108 has a high severity level due to its potential to allow brute force attacks that compromise security.

  • How do I fix CVE-2008-2108?

    To fix CVE-2008-2108, upgrade PHP to version 4.4.8 or later for PHP 4.x, or to 5.2.5 or later for PHP 5.x.

  • Which versions of PHP are affected by CVE-2008-2108?

    CVE-2008-2108 affects PHP versions prior to 4.4.8 and 5.2.5, specifically versions 4.x and 5.x running on 64-bit systems.

  • What does CVE-2008-2108 exploit in PHP?

    CVE-2008-2108 exploits a flaw in the GENERATE_SEED macro that results in insufficient entropy generation.

  • Is there a workaround for CVE-2008-2108?

    There are no known effective workarounds for CVE-2008-2108, and upgrading to a patched version is the recommended solution.

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