National Cyber-Alert System
Vulnerability Summary for CVE-2006-4812
Original release date:10/10/2006
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
- Official Statement from Red Hat (06/26/2008)
-
Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.
This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 3, and 4.
References to Advisories, Solutions, and Tools
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External Source: CONFIRM
Name: http://www.hardened-php.net/files/CVE-2006-4812.patch
Type: Patch Information
External Source: VUPEN
Name: ADV-2006-3922
Type: Advisory; Patch Information
External Source: SECTRACK
Name: 1016984
Type: Patch Information
External Source: SECUNIA
Name: 22280
Type: Advisory; Patch Information
External Source: REDHAT
Name: RHSA-2006:0708
Type: Advisory; Patch Information
External Source: XF
Name: php-ecalloc-integer-overflow(29362)
External Source: UBUNTU
Name: USN-362-1
External Source: TRUSTIX
Name: 2006-0055
External Source: BID
Name: 20349
External Source: OPENPKG
Name: OpenPKG-SA-2006.023
External Source: BUGTRAQ
Name: 20061009 Advisory 09/2006: PHP unserialize() Array Creation Integer Overflow
External Source: MISC
Name: http://www.hardened-php.net/advisory_092006.133.html
Type: Advisory
External Source: GENTOO
Name: GLSA-200610-14
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2006-234.htm
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2006-223.htm
External Source: SREASON
Name: 1691
External Source: SECUNIA
Name: 22650
External Source: SECUNIA
Name: 22538
External Source: SECUNIA
Name: 22533
External Source: SECUNIA
Name: 22338
External Source: SECUNIA
Name: 22331
External Source: SECUNIA
Name: 22300
External Source: SECUNIA
Name: 22281
External Source: REDHAT
Name: RHSA-2006:0688
External Source: SUSE
Name: SUSE-SA:2006:059
External Source: CONFIRM
Name: http://cvs.php.net/viewvc.cgi/ZendEngine2/zend_alloc.c?r1=1.161&r2=1.162