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USN-375-1: PHP vulnerability

03 November 2006

PHP vulnerability



Stefan Esser discovered two buffer overflows in the htmlentities() and
htmlspecialchars() functions. By supplying specially crafted input to
PHP applications which process that input with these functions, a
remote attacker could potentially exploit this to execute arbitrary
code with the privileges of the application. (CVE-2006-5465)

This update also fixes bugs in the chdir() and tempnam() functions,
which did not perform proper open_basedir checks. This could allow
local scripts to bypass intended restrictions.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 6.10
  • php5-cli - 5.1.6-1ubuntu2.1
  • libapache2-mod-php5 - 5.1.6-1ubuntu2.1
Ubuntu 6.06
  • php5-cli - 5.1.2-1ubuntu3.4
  • libapache2-mod-php5 - 5.1.2-1ubuntu3.4
Ubuntu 5.10
  • php5-cli - 5.0.5-2ubuntu1.6
  • libapache2-mod-php5 - 5.0.5-2ubuntu1.6

In general, a standard system upgrade is sufficient to effect the
necessary changes.