php4 - several vulnerabilities

Several remote vulnerabilities have been discovered in PHP, a
server-side, HTML-embedded scripting language, which may lead to the
execution of arbitrary code. The Common Vulnerabilities and Exposures
project identifies the following problems:

• CVE-2006-0207
  Stefan Esser discovered HTTP response splitting vulnerabilities
  in the session extension. This only affects Debian 3.1 (Sarge).
• CVE-2006-4486
  Stefan Esser discovered that an integer overflow in memory allocation
  routines allows the bypass of memory limit restrictions. This only
  affects Debian 3.1 (Sarge) on 64 bit architectures.
• CVE-2007-1864
  It was discovered that a buffer overflow in the xmlrpc extension
  allows the execution of arbitrary code.

For the oldstable distribution (sarge) these problems have been fixed
in version 4.3.10-22.

For the stable distribution (etch) these problems have been fixed
in version 4.4.4-8+etch4.

The unstable distribution (sid) no longer contains php4.

We recommend that you upgrade your PHP packages. Sarge packages for
hppa, mips and powerpc are not yet available, due to problems on the
build hosts. They will be provided later.