USN-1125-1: PCSC-Lite vulnerability

27 April 2011

pcsc-lite vulnerability

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10


PCSC-Lite could be made to crash or run programs if it accessed a special smart card.

Software Description

  • pcsc-lite - Middleware to access a smart card using PC/SC (development files)


Rafael Dominguez Vega discovered that PCSC-Lite incorrectly handled smart cards with malformed ATR messages. An attacker having physical access could exploit this with a special smart card and cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 10.10
libpcsclite1 - 1.5.5-3ubuntu2.1
Ubuntu 10.04 LTS
libpcsclite1 - 1.5.3-1ubuntu4.2
Ubuntu 9.10
libpcsclite1 - 1.5.3-1ubuntu1.2

To update your system, please follow these instructions:

After a standard system update you need to restart smart card applications to make all the necessary changes.