USN-761-2: PHP vulnerabilities

Ubuntu Security Notice USN-761-2

27th April, 2009

php5 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.04

Software description

  • php5


USN-761-1 fixed vulnerabilities in PHP.
This update provides the corresponding updates for Ubuntu 9.04.

Original advisory details:

It was discovered that PHP did not sanitize certain error messages when
display_errors is enabled, which could result in browsers becoming
vulnerable to cross-site scripting attacks when processing the output.
With cross-site scripting vulnerabilities, if a user were tricked into
viewing server output during a crafted server request, a remote attacker
could exploit this to modify the contents, or steal confidential data
(such as passwords), within the same domain. (CVE-2008-5814)

It was discovered that PHP did not properly handle certain malformed
strings when being parsed by the json_decode function. A remote attacker
could exploit this flaw and cause the PHP server to crash, resulting in a
denial of service. This issue only affected Ubuntu 8.04 and 8.10.

Update instructions

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

Ubuntu 9.04:
php5-cli 5.2.6.dfsg.1-3ubuntu4.1
php5-cgi 5.2.6.dfsg.1-3ubuntu4.1
libapache2-mod-php5 5.2.6.dfsg.1-3ubuntu4.1

To update your system, please follow these instructions:

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


CVE-2008-5814, CVE-2009-1271