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==========================================================================
Ubuntu Security Notice USN-4038-3
July 04, 2019

bzip2 regression
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-4038-1 introduced a regression in bzip2.

Software Description:
- bzip2: high-quality block-sorting file compressor - utilities

Details:

USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression
 causing
bzip2 to incorrect raises CRC errors for some files.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that bzip2 incorrectly handled certain files.
 An attacker could possibly use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 19.04:
  bzip2                           1.0.6-9ubuntu0.19.04.1
  libbz2-1.0                      1.0.6-9ubuntu0.19.04.1

Ubuntu 18.10:
  bzip2                           1.0.6-9ubuntu0.18.10.1
  libbz2-1.0                      1.0.6-9ubuntu0.18.10.1

Ubuntu 18.04 LTS:
  bzip2                           1.0.6-8.1ubuntu0.2
  libbz2-1.0                      1.0.6-8.1ubuntu0.2

Ubuntu 16.04 LTS:
  bzip2                           1.0.6-8ubuntu0.2
  libbz2-1.0                      1.0.6-8ubuntu0.2

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

References:
  https://usn.ubuntu.com/4038-3
  https://usn.ubuntu.com/4038-1
  https://launchpad.net/bugs/1834494

Package Information:
  https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.19.04.1
  https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.18.10.1
  https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8.1ubuntu0.2
  https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8ubuntu0.2

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