USN-1354-1: usbmuxd vulnerability

Ubuntu Security Notice USN-1354-1

1st February, 2012

usbmuxd vulnerability

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

  • Ubuntu 11.10
  • Ubuntu 11.04


usbmuxd could be made to crash or run programs if it received specially crafted input.

Software description

  • usbmuxd - USB multiplexor daemon for iPhone and iPod Touch devices


It was discovered that usbmuxd did not correctly perform bounds checking
when processing the SerialNumber field of USB devices. An attacker with
physical access could use this to crash usbmuxd or potentially execute
arbitrary code as the 'usbmux' user.

Update instructions

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

Ubuntu 11.10:
libusbmuxd1 1.0.7-1ubuntu0.11.10.1
Ubuntu 11.04:
libusbmuxd1 1.0.7-1ubuntu0.11.04.1

To update your system, please follow these instructions:

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