ID CVE-2006-4812
Summary 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).
References
Vulnerable Configurations
  • cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.3:patch1:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.3:patch1:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.6:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.7:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.7:rc2:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.7:rc2:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.0.7:rc3:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.0.7:rc3:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.2:*:dev:*:*:*:*:*
    cpe:2.3:a:php:php:4.2:*:dev:*:*:*:*:*
  • cpe:2.3:a:php:php:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:4.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.4:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.5:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:php:php:5.1.6:*:*:*:*:*:*:*
    cpe:2.3:a:php:php:5.1.6:*:*:*:*:*:*:*
CVSS
Base: 10.0 (as of 30-10-2018 - 16:25)
Impact:
Exploitability:
CWE CWE-94
CAPEC
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:N/AC:L/Au:N/C:C/I:C/A:C
redhat via4
advisories
  • rhsa
    id RHSA-2006:0688
  • rhsa
    id RHSA-2006:0708
refmap via4
bid 20349
bugtraq 20061009 Advisory 09/2006: PHP unserialize() Array Creation Integer Overflow
confirm
gentoo GLSA-200610-14
misc http://www.hardened-php.net/advisory_092006.133.html
openpkg OpenPKG-SA-2006.023
sectrack 1016984
secunia
  • 22280
  • 22281
  • 22300
  • 22331
  • 22338
  • 22533
  • 22538
  • 22650
sreason 1691
suse SUSE-SA:2006:059
trustix 2006-0055
ubuntu USN-362-1
vupen ADV-2006-3922
xf php-ecalloc-integer-overflow(29362)
statements via4
contributor Mark J Cox
lastmodified 2008-06-26
organization Red Hat
statement 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.
Last major update 30-10-2018 - 16:25
Published 10-10-2006 - 04:06
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