Ubuntu Security Notice USN-761-2
27th April, 2009
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
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.
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: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the