PHP GENERATE_SEED() weak security
| php-generateseed-weak-security (42226) |  Low Risk |
Description:
PHP, when running on 64-bit systems, could provide weaker than expected security. A multiplication process by the GENERATE_SEED macro function creates zero bit portions and makes attacks easier on protection mechanisms that use the rand and mt_rand functions. A remote attacker could exploit this vulnerability to generate predictable random numbers and gain unauthorized access to the applications.
*CVSS:
| Base Score: | 4 |
| Access Vector: | Network |
| Access Complexity: | High |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 3.5 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Other
Remedy:
Upgrade to the latest version of PHP (5.2.6 or later), available from the PHP Web site. See References.
References:
- Full-Disclosure Mailing List, Tue May 06 2008 - 03:16:01 CDT: Advisory SE-2008-02: PHP GENERATE_SEED() Weak Random Number Seed Vulnerability.
- PHP Web site: PHP: Downloads.
- ASA-2008-313: php security update (RHSA-2008-0544)
- ASA-2008-320: php security and bug fix update (RHSA-2008-0545)
- ASA-2008-325: php security update (RHSA-2008-0546)
- ASA-2008-326: php security update (RHSA-2008-0582)
- 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.
- DSA-1789: php5 -- several vulnerabilities
- GLSA-200811-05: PHP: Multiple vulnerabilities
- MDVSA-2008:125: Updated PHP packages fix multiple vulnerabilities
- MDVSA-2008:126: Updated PHP packages fix multiple vulnerabilities
- MDVSA-2008:127: Updated PHP packages fix multiple vulnerabilities
- MDVSA-2008:128: Updated PHP packages fix multiple vulnerabilities
- MDVSA-2008:129: Updated PHP packages fix multiple vulnerabilities
- MDVSA-2008:130: Updated PHP packages fix multiple vulnerabilities
- RHSA-2008-0505: Moderate: Red Hat Application Stack v2.1 security and enhancement update
- RHSA-2008-0544: Moderate: php security update
- RHSA-2008-0545: Moderate: php security and bug fix update
- RHSA-2008-0546: Moderate: php security update
- RHSA-2008-0582: Moderate: php security update
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 7.04
- Canonical Ubuntu 7.10
- Canonical Ubuntu 8.04 LTS
- Debian Debian Linux 4.0
- Debian Debian Linux 5.0
- Gentoo Linux
- MandrakeSoft Mandrake Linux 2007.1 X86_64
- MandrakeSoft Mandrake Linux 2007.1
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux 2008.1 X86_64
- MandrakeSoft Mandrake Linux 2008.1
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- PHP PHP 4.0.0
- PHP PHP 4.4.7
- PHP PHP 5.0.0 Beta4
- PHP PHP 5.0.0 Beta3
- PHP PHP 5.0.0 Beta2
- PHP PHP 5.0.0 Beta1
- PHP PHP 5.0.0 RC1
- PHP PHP 5.0.0
- PHP PHP 5.0.0 RC3
- PHP PHP 5.0.0 RC2
- PHP PHP 5.0.1
- PHP PHP 5.0.2
- PHP PHP 5.0.3
- PHP PHP 5.0.4
- PHP PHP 5.0.5
- PHP PHP 5.1.0
- PHP PHP 5.1.1
- PHP PHP 5.1.2
- PHP PHP 5.1.3
- PHP PHP 5.1.4
- PHP PHP 5.1.5
- PHP PHP 5.1.6
- PHP PHP 5.2.0
- PHP PHP 5.2.1
- PHP PHP 5.2.2
- PHP PHP 5.2.3
- PHP PHP 5.2.4
- RedHat Application Stack v1 for EL AS 4
- RedHat Application Stack v1 for EL ES 4
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Linux Advanced Workstation 2.1 Itanium
- RedHat RHEL Application Stack 2
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux 10 Server x64 Ed
- Turbolinux Turbolinux 11 Server
- Turbolinux Turbolinux 11 Server x64 Ed
- Turbolinux Turbolinux Multimedia
- Turbolinux Turbolinux Personal
- Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
- Turbolinux Turbolinux Appliance Server 2.0
Reported:
May 06, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.