The remote host is missing an update to pcsc-lite announced via advisory USN-969-1.
Details follow:
It was discovered that the PC/SC service did not correctly handle malformed messages. A local attacker could exploit this to execute arbitrary code with root privileges.
Solution: The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 9.04: pcscd 1.4.102-1ubuntu2.1
Ubuntu 9.10: pcscd 1.5.3-1ubuntu1.1
Ubuntu 10.04 LTS: pcscd 1.5.3-1ubuntu4.1
In general, a standard system update will make all the necessary changes.