PHP error_log safe_mode security bypass

php-error-safemode-bypass (47314) The risk level is classified as LowLow Risk

Description:

PHP could allow a local attacker to bypass safe_mode security restrictions, caused by an error when using the error_log directive. An attacker could exploit this vulnerability using unspecified attack vectors to write malicious files to restricted directories.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 1.6
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of PHP (5.2.8 or later), available from the PHP Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • HPSBUX02431 SSRT090085 rev.1: HP-UX Running Apache Web Server Suite, Remote Denial of Service (DoS), Execution of Arbitrary Code.
  • PHP Web site: PHP: Hypertext Preprocessor.
  • PHP Web site: PHP: PHP 5 ChangeLog.
  • SecurityReason SecurityAlert : 57: PHP 5.2.6 (error_log) safe_mode bypass.
  • ASA-2009-255: HPSBUX02431 SSRT090085 rev.1 - HP-UX Running Apache Web Server SuiteRemote Denial of Service (DoS) Execution of Arbitrary Code
  • BID-32383: PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability
  • CVE-2008-5625: PHP 5 before 5.2.7 does not enforce the error_log safe_mode restrictions when safe_mode is enabled through a php_admin_flag setting in httpd.conf, which allows context-dependent attackers to write to arbitrary files by placing a php_value error_log entry in a .htaccess file.
  • GLSA-201001-03: PHP: Multiple vulnerabilities
  • MDVSA-2009:045: php
  • SA35650: HP-UX Apache Web Server Suite Multiple Vulnerabilities
  • SUSE-SR:2010:005: SUSE Security Summary Report

Platforms Affected:

  • Apache HTTP Server 2.0.59
  • Apache HTTP Server 2.2.8
  • Apache Tomcat 5.5.27
  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Canonical Ubuntu 8.10
  • Gentoo Linux
  • HP HP-UX B.11.11
  • HP HP-UX B.11.23
  • HP HP-UX B.11.31
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • Mandriva Linux 2009.0
  • Mandriva Linux 2009.0 X86_64
  • PHP PHP 5.0.0
  • PHP PHP 5.0.0 Beta4
  • PHP PHP 5.0.0 RC3
  • PHP PHP 5.0.0 RC2
  • PHP PHP 5.0.0 RC1
  • PHP PHP 5.0.0 Beta3
  • PHP PHP 5.0.0 Beta2
  • 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
  • PHP PHP 5.2.5
  • PHP PHP 5.2.6
  • Turbolinux Appliance Server 3.0 x64
  • Turbolinux Appliance Server 3.0
  • Turbolinux Client 2008
  • Turbolinux Turbolinux 10 Server
  • Turbolinux Turbolinux 10 Server x64 Ed
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed
  • Turbolinux Turbolinux 8 Server
  • Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
  • Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
  • Turbolinux Turbolinux Appliance Server 2.0

Reported:

Nov 20, 2008

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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.