PHP multiple COM objects security bypass

php-com-security-bypass (37368) The risk level is classified as MediumMedium Risk

Description:

PHP could allow a remote attacker to bypass the safe_mode and disable_function security restrictions, caused by improper handling of COM objects. By uploading a malicious script to the server, an attacker could exploit this vulnerability to execute arbitrary commands on the system.

Platforms Affected:

  • PHP, PHP 5.0.0
  • PHP, PHP 5.0.0 RC1
  • PHP, PHP 5.0.0 RC3
  • PHP, PHP 5.0.0 RC2
  • PHP, PHP 5.0.0 Beta2
  • PHP, PHP 5.0.0 Beta4
  • PHP, PHP 5.0.0 Beta3
  • PHP, PHP 5.0.0 Beta1
  • 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

Remedy:

No remedy available as of July 4, 2009.

Consequences:

Bypass Security

References:

  • The PHP Group Web site, PHP: Hypertext Preprocessor at http://www.php.net/.
  • CVE-2007-5653: The Component Object Model (COM) functions in PHP 5.x on Windows do not follow safe_mode and disable_functions restrictions, which allows context-dependent attackers to bypass intended limitations, as demonstrated by executing objects with the kill bit set in the corresponding ActiveX control Compatibility Flags, executing programs via a function in compatUI.dll, invoking wscript.shell via wscript.exe, invoking Scripting.FileSystemObject via wshom.ocx, and adding users via a function in shgina.dll, related to the com_load_typelib function.
  • SA27280: PHP COM Objects Security Bypass
  • VUPEN/ADV-2007-3590: PHP for Windows COM Objects Handling Security Bypass Vulnerability

Reported:

Oct 22, 2007

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