PHP ext/session and header function HTTP response splitting

php-session-response-splitting (24094) The risk level is classified as MediumMedium Risk

Description:

PHP is vulnerable to an HTTP response splitting attack, caused by improper validation of the session id that is returned in the Set-Cookie HTTP response header. If a remote attacker sends an HTTP GET containing a specially-crafted session id to a Web server that is configured to use PHP session extension, the attacker could inject arbitrary HTTP headers into the HTTP response body. An attacker could use this vulnerability to perform cross-site scripting attacks, session hijacking, Web cache poisoning, and other malicious activity.

Platforms Affected:

  • Canonical, Ubuntu 4.10
  • Canonical, Ubuntu 5.04
  • Canonical, Ubuntu 5.10
  • Debian, Debian Linux 3.1
  • Debian, Debian Linux 4.0
  • Gentoo, Linux
  • MandrakeSoft, Mandrake Linux 10.1 X86_64
  • MandrakeSoft, Mandrake Linux 10.1
  • MandrakeSoft, Mandrake Linux 2006
  • MandrakeSoft, Mandrake Linux 2006 X86_64
  • MandrakeSoft, Mandrake Linux LE2005
  • MandrakeSoft, Mandrake Linux LE2005 X86_64
  • MandrakeSoft, Mandrake Linux Corporate Server 2.1
  • MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
  • MandrakeSoft, Mandrake Linux Corporate Server 3.0
  • MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft, Mandrake Multi Network Firewall 2.0
  • PHP, PHP 5.0.0 Beta4
  • PHP, PHP 5.0.0 RC3
  • PHP, PHP 5.0.0
  • PHP, PHP 5.0.0 RC2
  • PHP, PHP 5.0.0 RC1
  • PHP, PHP 5.0.0 Beta1
  • PHP, PHP 5.0.0 Beta2
  • PHP, PHP 5.0.0 Beta3
  • 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
  • RedHat, Enterprise Linux 2.1 AS
  • RedHat, Enterprise Linux 2.1 ES
  • RedHat, Enterprise Linux 2.1 WS
  • RedHat, Enterprise Linux 3 AS
  • RedHat, Enterprise Linux 3 Desktop
  • RedHat, Enterprise Linux 3 ES
  • RedHat, Enterprise Linux 3 WS
  • RedHat, Enterprise Linux 4 Desktop
  • RedHat, Enterprise Linux 4 AS
  • RedHat, Enterprise Linux 4 ES
  • RedHat, Enterprise Linux 4 WS
  • RedHat, Linux Advanced Workstation 2.1 Itanium
  • Turbolinux, Turbolinux 10 Desktop
  • Turbolinux, Turbolinux 10 F...
  • Turbolinux, Turbolinux 10 Server
  • Turbolinux, Turbolinux 10 Server x64 Ed
  • Turbolinux, Turbolinux 7 Server
  • Turbolinux, Turbolinux 8 Server
  • Turbolinux, Turbolinux 8 Workstation
  • Turbolinux, Turbolinux Home
  • 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

Remedy:

Upgrade to the latest version of PHP (5.1.2 or later), available from The PHP Group Web site. See References.

For Red Hat Linux:
Refer to RHSA-2006:0276-9 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (php):
Refer to RHSA-2006:0501-6 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-03-22 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux:
Refer to USN-261-1 for patch, upgrade, or suggested workaround information. See References.

For Debian/GNU Linux (php4):
Refer to DSA-1331-1 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Access

References:

Reported:

Jan 12, 2006

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

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