PHP header() function could allow cross-site scripting

php-header-xss (10079)

Medium Risk

Description:

PHP could allow a remote attacker to launch cross-site scripting attacks and cause automatic file downloads, caused by an input validation vulnerability in the header() function. A remote attacker using the PHP header() function could inject malicious script into URL headers by sending a specially-crafted URL request that uses hexadecimal URL encoded characters. This could cause the script to be executed in a victim's Web browser within the security context of the vulnerable server or cause file downloads to be initiated.

*CVSS:

Base Score:	2.8
Access Vector:	Remote
Access Complexity:	High
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	Partial
Availability Impact:	None
Temporal Score:	2.7
Exploitability:	High
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of July 9, 2011.

References:

• BugTraq Mailing List, Sat Sep 07 2002 - 17:36:49 CDT : PHP header() CRLF Injection .
• PHP Group Web site: PHP: Hypertext Preprocessor.
• BID-5669: PHP Header Function Script Injection Vulnerability

Platforms Affected:

• PHP PHP 4.2.3
• Various vendors Any Web server

Reported:

Sep 07, 2002

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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.

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