PHP htmlentities and htmlspecialchars functions partial multibyte security bypass

php-partialmultibyte-security-bypass (38577) The risk level is classified as MediumMedium Risk

Description:

PHP could allow a remote attacker to bypass security restrictions, caused by an error in the htmlentities and htmlspecialchars functions. An attacker could exploit this vulnerability using partial multibyte sequences to bypass security restrictions.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of PHP (5.2.5 or later), available from the PHP Web site. See References.

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

References:

  • HPSBUX02332 SSRT080056 rev.1: HP-UX running Apache with PHP, Remote Denial of Service (DoS), Gain Extended Privileges.
  • PHP Web site: PHP.
  • ASA-2008-198: HP-UX running Apache with PHP Remote Denial of Service (DoS) Gain Extended Privileges (HPSBUX02332)
  • ASA-2008-313: php security update (RHSA-2008-0544)
  • ASA-2008-320: php security and bug fix update (RHSA-2008-0545)
  • ASA-2008-325: php security update (RHSA-2008-0546)
  • ASA-2008-326: php security update (RHSA-2008-0582)
  • BID-26403: PHP 5.2.4 and Prior Versions Multiple Vulnerabilities
  • CVE-2007-5898: The (1) htmlentities and (2) htmlspecialchars functions in PHP before 5.2.5 accept partial multibyte sequences, which has unknown impact and attack vectors, a different issue than CVE-2006-5465.
  • DSA-1444: php5 -- several vulnerabilities
  • MDVSA-2008:125: Updated PHP packages fix multiple vulnerabilities
  • MDVSA-2008:126: Updated PHP packages fix multiple vulnerabilities
  • MDVSA-2008:127: Updated PHP packages fix multiple vulnerabilities
  • MDVSA-2010:007: php
  • RHSA-2008-0505: Moderate: Red Hat Application Stack v2.1 security and enhancement update
  • RHSA-2008-0544: Moderate: php security update
  • RHSA-2008-0545: Moderate: php security and bug fix update
  • RHSA-2008-0546: Moderate: php security update
  • RHSA-2008-0582: Moderate: php security update
  • SA27648: PHP Multiple Vulnerabilities
  • SECTRACK ID: 1018934: PHP Buffer Overflows, Filtering Bypass, and Configuration Bypass Bugs May Let Users Gain Elevated Privileges
  • SUSE-SA:2008:004: php5 php4 Security Problems

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 6.10
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Debian Debian Linux 4.0
  • HP HP-UX B.11.11
  • HP HP-UX B.11.23
  • HP HP-UX B.11.31
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • Novell Linux Desktop 9
  • Novell Linux Desktop 9 SDK
  • Novell Linux POS 9
  • Novell Open Enterprise Server
  • Novell Open Enterprise Server
  • Novell OpenSUSE 10.2
  • Novell OpenSUSE 10.3
  • Novell SLE SDK 10 SP1
  • Novell SLE SDK 10
  • Novell SUSE Linux Enterprise Desktop 10 SP1
  • Novell SUSE Linux Enterprise Server 10
  • Novell SUSE Linux Enterprise Server 10 SP1
  • PHP PHP 5.0.0
  • PHP PHP 5.0.0 Beta1
  • PHP PHP 5.0.0 Beta2
  • PHP PHP 5.0.0 Beta3
  • PHP PHP 5.0.0 Beta4
  • PHP PHP 5.0.0 RC1
  • PHP PHP 5.0.0 RC2
  • PHP PHP 5.0.0 RC3
  • 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
  • RedHat Application Stack v1 for EL AS 4
  • RedHat Application Stack v1 for EL ES 4
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Linux Advanced Workstation 2.1 Itanium
  • RedHat RHEL Application Stack 2
  • SuSE SuSE SLES 9
  • Turbolinux Turbolinux 10 Server
  • Turbolinux Turbolinux 10 Server x64 Ed
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed
  • Turbolinux Turbolinux Multimedia
  • Turbolinux Turbolinux Personal
  • Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
  • Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
  • Turbolinux Turbolinux Appliance Server 2.0

Reported:

Nov 08, 2007

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