USN-4087-1: BWA vulnerability

6 August 2019

BWA vulnerability

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

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS


BWA could be made to crash or run programs as your login if it opened a specially crafted file.

Software Description

  • bwa - Software package for mapping DNA sequences against a large reference genome


It was discovered that Burrows-Wheeler Aligner (BWA) mishandled certain crafted .alt files. An attacker could use this vulnerability to cause a denial of service (crash) or possibly execute arbitrary code.

Update instructions

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

Ubuntu 19.04
bwa - 0.7.17-3~ubuntu0.19.04.1
Ubuntu 18.04 LTS
bwa - 0.7.17-1ubuntu0.1

To update your system, please follow these instructions:

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