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USN-761-1: PHP vulnerabilities

20 April 2009

PHP vulnerabilities

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Releases

Packages

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 the
mbstring.func_overload setting within .htaccess files when using virtual
hosts. A virtual host administrator could use this flaw to cause settings
to be applied to other virtual hosts on the same server. (CVE-2009-0754)

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.
(CVE-2009-1271)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

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

Related notices

  • USN-761-2: php5, php5-cli, libapache2-mod-php5, php5-cgi