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.

*CVSS:

Base Score: 5.6
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.6
  Exploitability: Functional
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

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.

References:

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
  • MandrakeSoft Mandrake Linux 10.1 X86_64
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • MandrakeSoft Mandrake Linux LE2005 X86_64
  • MandrakeSoft Mandrake Linux LE2005
  • MandrakeSoft Mandrake Linux Corporate Server 2.1 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 2.1
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Multi Network Firewall 2.0
  • 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 5.0.0
  • 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 WS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS
  • 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

Reported:

Jan 12, 2006

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