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Last updated: 10/25/2014 7:48:47 PM

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Vulnerability Summary for CVE-2007-4661

Original release date: 09/04/2007
Last revised: 09/05/2008
Source: US-CERT/NIST

Overview

The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers, which has unknown attack vectors and impact, possibly resulting in a heap-based buffer overflow. NOTE: this is due to an incomplete fix for CVE-2007-2872.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Mandriva (09/18/2007)
Not vulnerable. Mandriva has not issued an update to date to fix CVE-2007-2872 and the updates in progress are using a correct fix.
Official Statement from Red Hat (09/05/2007)
Not vulnerable. Red Hat did not include an incomplete fix for CVE-2007-2872 for PHP in Red Hat Enterprise Linux or Red Hat Application Stack.

References to Advisories, Solutions, and Tools

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External Source: UBUNTU
Name: USN-549-1
External Source: CONFIRM
Name: http://www.php.net/ChangeLog-5.php#5.2.4
External Source: SECUNIA
Name: 27864
External Source: CONFIRM
Name: http://www.php.net/releases/5_2_4.php
Type: Patch Information
External Source: SECUNIA
Name: 26838
External Source: UBUNTU
Name: USN-549-2
External Source: MISC
Name: http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.58&r2=1.445.2.14.2.59
External Source: CONFIRM
Name: https://launchpad.net/bugs/173043
External Source: SECUNIA
Name: 26642
Type: Patch Information
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-1702
External Source: SECUNIA
Name: 27102
External Source: SUSE
Name: SUSE-SA:2008:004
External Source: GENTOO
Name: GLSA-200710-02
External Source: SECUNIA
Name: 28658

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