USN-882-1: PHP vulnerabilities
13 January 2010
PHP vulnerabilities
Releases
Packages
- php5 -
Details
Maksymilian Arciemowicz discovered that PHP did not properly handle the
ini_restore function. An attacker could exploit this issue to obtain
random memory contents or to cause the PHP server to crash, resulting in a
denial of service. (CVE-2009-2626)
It was discovered that the htmlspecialchars function did not properly
handle certain character sequences, 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-2009-4142)
Stefan Esser discovered that PHP did not properly handle session data. An
attacker could exploit this issue to bypass safe_mode or open_basedir
restrictions. (CVE-2009-4143)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06
In general, a standard system upgrade is sufficient to effect the
necessary changes.