USN-969-1: PCSC-Lite vulnerability

Ubuntu Security Notice USN-969-1

5th August, 2010

pcsc-lite vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04


Multiple buffer overflows in PC/SC service.

Software description

  • pcsc-lite - Middleware to access a smart card using PC/SC


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.

Update instructions

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

Ubuntu 10.04 LTS:
pcscd 1.5.3-1ubuntu4.1
Ubuntu 9.10:
pcscd 1.5.3-1ubuntu1.1
Ubuntu 9.04:
pcscd 1.4.102-1ubuntu2.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.


CVE-2009-4901, CVE-2009-4902, CVE-2010-0407