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Ubuntu 14.04, 12.04 ESM: USN-4038-4 Moderate: Bzip2 Regression Issue

ubuntu
Calendar Grey July 4, 2019
Dist Ubuntu Esm H88
Ubuntu Security Announcement USN-4038-4 resolves an issue in bzip2 affecting ESM distributions.
USN-4038-1 introduced a regression in bzip2.

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. 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.

Topics%20covered

Topics Covered

security advisory software update arbitrary code execution ubuntu regression bzip2

Update Instructions

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

Ubuntu 14.04 ESM:
  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

Ubuntu 12.04 ESM:
  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

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

References

https://ubuntu.com/security/notices/USN-4038-4

https://ubuntu.com/security/notices/USN-4038-1

https://bugs.launchpad.net/ubuntu/+source/bzip2/+bug/1834494

July 04, 2019

Topics%20covered

Topics Covered

security advisory software update arbitrary code execution ubuntu regression bzip2

Package Information

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