USN-969-1: PCSC-Lite vulnerability

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Ubuntu Security Notice USN-969-1 August 05, 2010
pcsc-lite vulnerability
CVE-2009-4901, CVE-2009-4902, CVE-2010-0407
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A security issue affects the following Ubuntu releases:

Ubuntu 9.04
Ubuntu 9.10
Ubuntu 10.04 LTS

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

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.

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.