1. Ubuntu Security Notices
  2. USN-4038-4

USN-4038-4: bzip2 regression

Publication date

4 July 2019

Overview

USN-4038-1 introduced a regression in bzip2.

Releases

Packages

  • 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. This update provides the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.

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.

USN-4038-1 fixed a vulnerability in bzip2. The update introduced
a regression causing bzip2 to incorrect raises CRC errors for some
files. This update provides the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.04 trusty bzip2 –  1.0.6-5ubuntu0.1~esm2
lib32bz2-1.0 –  1.0.6-5ubuntu0.1~esm2
lib64bz2-1.0 –  1.0.6-5ubuntu0.1~esm2
libbz2-1.0 –  1.0.6-5ubuntu0.1~esm2
12.04 precise bzip2 –  1.0.6-1ubuntu0.2
lib32bz2-1.0 –  1.0.6-1ubuntu0.2
lib64bz2-1.0 –  1.0.6-1ubuntu0.2
libbz2-1.0 –  1.0.6-1ubuntu0.2

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References

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