FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

php5 -- header splitting attack via carriage-return character

Affected packages
5.2	<=	php5	<	5.2.17_11
5.3	<=	php5	<	5.3.11
5.4	<=	php5	<	5.4.1
		php52	<	5.2.17_11
		php53	<	5.3.11

Details

VuXML ID	918f38cd-f71e-11e1-8bd8-0022156e8794
Discovery	2011-11-06
Entry	2012-09-05
Modified	2012-09-19

Rui Hirokawa reports:

As of PHP 5.1.2, header() can no longer be used to send multiple response headers in a single call to prevent the HTTP Response Splitting Attack. header() only checks the linefeed (LF, 0x0A) as line-end marker, it doesn't check the carriage-return (CR, 0x0D).

However, some browsers including Google Chrome, IE also recognize CR as the line-end.

The current specification of header() still has the vulnerability against the HTTP header splitting attack.

[source]

References

CVE Name	CVE-2011-1398
URL	https://bugs.php.net/bug.php?id=60227